{
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              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
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                "id": "CVE-2024-56582",
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                "description": "CWE-416 Use After Free",
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              }
            ]
          }
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          "dateUpdated": "2025-02-11T15:45:24.334Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
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        ],
        "title": "CVE Program Container"
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    ],
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          "defaultStatus": "unaffected",
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              "version": "5.18"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix use-after-free in btrfs_encoded_read_endio()\n\nShinichiro reported the following use-after free that sometimes is\nhappening in our CI system when running fstests\u0027 btrfs/284 on a TCMU\nrunner device:\n\n  BUG: KASAN: slab-use-after-free in lock_release+0x708/0x780\n  Read of size 8 at addr ffff888106a83f18 by task kworker/u80:6/219\n\n  CPU: 8 UID: 0 PID: 219 Comm: kworker/u80:6 Not tainted 6.12.0-rc6-kts+ #15\n  Hardware name: Supermicro Super Server/X11SPi-TF, BIOS 3.3 02/21/2020\n  Workqueue: btrfs-endio btrfs_end_bio_work [btrfs]\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x6e/0xa0\n   ? lock_release+0x708/0x780\n   print_report+0x174/0x505\n   ? lock_release+0x708/0x780\n   ? __virt_addr_valid+0x224/0x410\n   ? lock_release+0x708/0x780\n   kasan_report+0xda/0x1b0\n   ? lock_release+0x708/0x780\n   ? __wake_up+0x44/0x60\n   lock_release+0x708/0x780\n   ? __pfx_lock_release+0x10/0x10\n   ? __pfx_do_raw_spin_lock+0x10/0x10\n   ? lock_is_held_type+0x9a/0x110\n   _raw_spin_unlock_irqrestore+0x1f/0x60\n   __wake_up+0x44/0x60\n   btrfs_encoded_read_endio+0x14b/0x190 [btrfs]\n   btrfs_check_read_bio+0x8d9/0x1360 [btrfs]\n   ? lock_release+0x1b0/0x780\n   ? trace_lock_acquire+0x12f/0x1a0\n   ? __pfx_btrfs_check_read_bio+0x10/0x10 [btrfs]\n   ? process_one_work+0x7e3/0x1460\n   ? lock_acquire+0x31/0xc0\n   ? process_one_work+0x7e3/0x1460\n   process_one_work+0x85c/0x1460\n   ? __pfx_process_one_work+0x10/0x10\n   ? assign_work+0x16c/0x240\n   worker_thread+0x5e6/0xfc0\n   ? __pfx_worker_thread+0x10/0x10\n   kthread+0x2c3/0x3a0\n   ? __pfx_kthread+0x10/0x10\n   ret_from_fork+0x31/0x70\n   ? __pfx_kthread+0x10/0x10\n   ret_from_fork_asm+0x1a/0x30\n   \u003c/TASK\u003e\n\n  Allocated by task 3661:\n   kasan_save_stack+0x30/0x50\n   kasan_save_track+0x14/0x30\n   __kasan_kmalloc+0xaa/0xb0\n   btrfs_encoded_read_regular_fill_pages+0x16c/0x6d0 [btrfs]\n   send_extent_data+0xf0f/0x24a0 [btrfs]\n   process_extent+0x48a/0x1830 [btrfs]\n   changed_cb+0x178b/0x2ea0 [btrfs]\n   btrfs_ioctl_send+0x3bf9/0x5c20 [btrfs]\n   _btrfs_ioctl_send+0x117/0x330 [btrfs]\n   btrfs_ioctl+0x184a/0x60a0 [btrfs]\n   __x64_sys_ioctl+0x12e/0x1a0\n   do_syscall_64+0x95/0x180\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n  Freed by task 3661:\n   kasan_save_stack+0x30/0x50\n   kasan_save_track+0x14/0x30\n   kasan_save_free_info+0x3b/0x70\n   __kasan_slab_free+0x4f/0x70\n   kfree+0x143/0x490\n   btrfs_encoded_read_regular_fill_pages+0x531/0x6d0 [btrfs]\n   send_extent_data+0xf0f/0x24a0 [btrfs]\n   process_extent+0x48a/0x1830 [btrfs]\n   changed_cb+0x178b/0x2ea0 [btrfs]\n   btrfs_ioctl_send+0x3bf9/0x5c20 [btrfs]\n   _btrfs_ioctl_send+0x117/0x330 [btrfs]\n   btrfs_ioctl+0x184a/0x60a0 [btrfs]\n   __x64_sys_ioctl+0x12e/0x1a0\n   do_syscall_64+0x95/0x180\n   entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\n  The buggy address belongs to the object at ffff888106a83f00\n   which belongs to the cache kmalloc-rnd-07-96 of size 96\n  The buggy address is located 24 bytes inside of\n   freed 96-byte region [ffff888106a83f00, ffff888106a83f60)\n\n  The buggy address belongs to the physical page:\n  page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888106a83800 pfn:0x106a83\n  flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)\n  page_type: f5(slab)\n  raw: 0017ffffc0000000 ffff888100053680 ffffea0004917200 0000000000000004\n  raw: ffff888106a83800 0000000080200019 00000001f5000000 0000000000000000\n  page dumped because: kasan: bad access detected\n\n  Memory state around the buggy address:\n   ffff888106a83e00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n   ffff888106a83e80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n  \u003effff888106a83f00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n                              ^\n   ffff888106a83f80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n   ffff888106a84000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n  ==================================================================\n\nFurther analyzing the trace and \n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:55:14.844Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a40de0330af4fb7bc6b354250c24f294f8b826a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/6228f13f1996a4feb9b601d6644bf0bfe03671dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/f8a5129e4a9fc3f6aa3f137513253b51b31b94d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/05b36b04d74a517d6675bf2f90829ff1ac7e28dc"
        }
      ],
      "title": "btrfs: fix use-after-free in btrfs_encoded_read_endio()",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56582",
    "datePublished": "2024-12-27T14:23:23.851Z",
    "dateReserved": "2024-12-27T14:03:06.000Z",
    "dateUpdated": "2026-05-11T20:55:14.844Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-50141",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
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                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T20:21:07.381242Z",
                "version": "2.0.3"
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              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T20:27:14.275Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:25:59.519Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/prmt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "cefc7ca46235f01d5233e3abd4b79452af01d9e9",
              "versionType": "git"
            },
            {
              "lessThan": "8ce081ad842510f0e70fa6065a401660eac876d4",
              "status": "affected",
              "version": "cefc7ca46235f01d5233e3abd4b79452af01d9e9",
              "versionType": "git"
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            {
              "lessThan": "795b080d9aa127215a5baf088a22fa09341a0126",
              "status": "affected",
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              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/prmt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.171",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.115",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.59",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
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      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.115",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                }
              ],
              "negate": false,
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: PRM: Find EFI_MEMORY_RUNTIME block for PRM handler and context\n\nPRMT needs to find the correct type of block to translate the PA-VA\nmapping for EFI runtime services.\n\nThe issue arises because the PRMT is finding a block of type\nEFI_CONVENTIONAL_MEMORY, which is not appropriate for runtime services\nas described in Section 2.2.2 (Runtime Services) of the UEFI\nSpecification [1]. Since the PRM handler is a type of runtime service,\nthis causes an exception when the PRM handler is called.\n\n    [Firmware Bug]: Unable to handle paging request in EFI runtime service\n    WARNING: CPU: 22 PID: 4330 at drivers/firmware/efi/runtime-wrappers.c:341\n        __efi_queue_work+0x11c/0x170\n    Call trace:\n\nLet PRMT find a block with EFI_MEMORY_RUNTIME for PRM handler and PRM\ncontext.\n\nIf no suitable block is found, a warning message will be printed, but\nthe procedure continues to manage the next PRM handler.\n\nHowever, if the PRM handler is actually called without proper allocation,\nit would result in a failure during error handling.\n\nBy using the correct memory types for runtime services, ensure that the\nPRM handler and the context are properly mapped in the virtual address\nspace during runtime, preventing the paging request error.\n\nThe issue is really that only memory that has been remapped for runtime\nby the firmware can be used by the PRM handler, and so the region needs\nto have the EFI_MEMORY_RUNTIME attribute.\n\n[ rjw: Subject and changelog edits ]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is entered through AML evaluation of a PlatformRtMechanism OperationRegion write, driven by local ACPI method evaluation (sysfs attribute access, device methods) or the in-kernel AMD RAS address-translation path. There is no remote or adjacent-network reachability.\nAC:L - On an affected platform the mistranslation is computed once at boot in acpi_parse_prmt() and is deterministic \u2014 every subsequent PRM handler invocation uses the bad pointers, with no race to win and no memory-layout luck required. CONFIG_ACPI_PRMT is default y on all X86_64/ARM64 EFI kernels.\nPR:L - An unprivileged local account suffices: ordinary world-readable sysfs attributes (thermal zone temperature, battery state, device _DSM-backed nodes) cause the ACPI interpreter to execute AML that can issue the PlatformRtMechanism write. No CAP_* capability or root is checked anywhere on the path from AML to acpi_platformrt_space_handler().\nUI:N - The attacker triggers ACPI method evaluation entirely through their own actions; no victim must open a file, mount a filesystem, or take any other step.\nS:U - The miscomputed pointers are used by the kernel and by firmware acting on the kernel\u0027s behalf, and the resulting corruption and denial of service remain within the kernel/platform security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The mistranslated static_data_buffer_addr and acpi_param_buffer_addr are passed unchecked to the firmware PRM handler, which reads through them; because efi_pgd contains 1:1 mappings of every runtime region plus page 0 and the ident-mapped memmap, these unbounded out-of-range reads can pull arbitrary kernel and firmware memory into the PRM context, an unbounded disclosure primitive.\nI:H - The same wrong pointers give the firmware handler an out-of-bounds write into mapped, writable memory in efi_mm, and the mistranslated handler_addr is used directly as an indirect call target \u2014 with EFI_RUNTIME_SERVICES_CODE regions mapped 1:1 and executable, this is a control-flow transfer to unintended code executing at the highest privilege level.\nA:H - When the bogus address is unmapped the call faults inside EFI runtime services; x86_64\u0027s efi_crash_gracefully_on_page_fault() WARNs, clears EFI_RUNTIME_SERVICES and parks the efi_rts_wq worker in an infinite schedule() loop, permanently destroying EFI runtime services (efivarfs, capsule update, EFI reboot) and leaking a kernel worker, with a panic on panic_on_warn systems."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:41:59.590Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin()\n\nUse {READ,WRITE}_ONCE() to access kvm-\u003elast_boosted_vcpu to ensure the\nloads and stores are atomic.  In the extremely unlikely scenario the\ncompiler tears the stores, it\u0027s theoretically possible for KVM to attempt\nto get a vCPU using an out-of-bounds index, e.g. if the write is split\ninto multiple 8-bit stores, and is paired with a 32-bit load on a VM with\n257 vCPUs:\n\n  CPU0                              CPU1\n  last_boosted_vcpu = 0xff;\n\n                                    (last_boosted_vcpu = 0x100)\n                                    last_boosted_vcpu[15:8] = 0x01;\n  i = (last_boosted_vcpu = 0x1ff)\n                                    last_boosted_vcpu[7:0] = 0x00;\n\n  vcpu = kvm-\u003evcpu_array[0x1ff];\n\nAs detected by KCSAN:\n\n  BUG: KCSAN: data-race in kvm_vcpu_on_spin [kvm] / kvm_vcpu_on_spin [kvm]\n\n  write to 0xffffc90025a92344 of 4 bytes by task 4340 on cpu 16:\n  kvm_vcpu_on_spin (arch/x86/kvm/../../../virt/kvm/kvm_main.c:4112) kvm\n  handle_pause (arch/x86/kvm/vmx/vmx.c:5929) kvm_intel\n  vmx_handle_exit (arch/x86/kvm/vmx/vmx.c:?\n\t\t arch/x86/kvm/vmx/vmx.c:6606) kvm_intel\n  vcpu_run (arch/x86/kvm/x86.c:11107 arch/x86/kvm/x86.c:11211) kvm\n  kvm_arch_vcpu_ioctl_run (arch/x86/kvm/x86.c:?) kvm\n  kvm_vcpu_ioctl (arch/x86/kvm/../../../virt/kvm/kvm_main.c:?) kvm\n  __se_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:904 fs/ioctl.c:890)\n  __x64_sys_ioctl (fs/ioctl.c:890)\n  x64_sys_call (arch/x86/entry/syscall_64.c:33)\n  do_syscall_64 (arch/x86/entry/common.c:?)\n  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\n  read to 0xffffc90025a92344 of 4 bytes by task 4342 on cpu 4:\n  kvm_vcpu_on_spin (arch/x86/kvm/../../../virt/kvm/kvm_main.c:4069) kvm\n  handle_pause (arch/x86/kvm/vmx/vmx.c:5929) kvm_intel\n  vmx_handle_exit (arch/x86/kvm/vmx/vmx.c:?\n\t\t\tarch/x86/kvm/vmx/vmx.c:6606) kvm_intel\n  vcpu_run (arch/x86/kvm/x86.c:11107 arch/x86/kvm/x86.c:11211) kvm\n  kvm_arch_vcpu_ioctl_run (arch/x86/kvm/x86.c:?) kvm\n  kvm_vcpu_ioctl (arch/x86/kvm/../../../virt/kvm/kvm_main.c:?) kvm\n  __se_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:904 fs/ioctl.c:890)\n  __x64_sys_ioctl (fs/ioctl.c:890)\n  x64_sys_call (arch/x86/entry/syscall_64.c:33)\n  do_syscall_64 (arch/x86/entry/common.c:?)\n  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\n  value changed: 0x00000012 -\u003e 0x00000000"
        }
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              "value": "AV:L - The vulnerable code is entered only from guest execution of PAUSE/WFE/DIAG-0x44 handled by the host KVM module, or equivalently via the `KVM_RUN` ioctl on `/dev/kvm` as shown in the KCSAN stack trace. There is no network-facing path to `kvm_vcpu_on_spin()`, so the attacker must be running code locally on the host or inside a VM hosted on it.\nAC:L - The attacker controls both sides of the race outright \u2014 a guest simply runs PAUSE spin loops on several vCPUs at once, driving many threads into the unsynchronized read/write of `kvm-\u003elast_boosted_vcpu` with no external precondition. No specific victim state or memory layout the attacker cannot influence is required to hit the racing accesses.\nPR:L - The attacker needs the ability to run code inside a VM on the host (or open `/dev/kvm` locally), which is an unprivileged-user-level capability \u2014 no root or CAP_SYS_ADMIN is required, and PAUSE is executable from guest ring 3. This matches the standard treatment of guest-triggerable KVM host bugs.\nUI:N - Triggering requires only that the attacker\u0027s own guest vCPU threads spin concurrently; no host administrator or other user has to perform any action. The race is hit entirely by the attacker\u0027s own execution.\nS:C - The bug is triggered by unprivileged code inside a guest but the corrupted index and any resulting wild pointer access occur in the host kernel, crossing the VM-to-hypervisor security boundary. A guest compromising host kernel availability/integrity is a scope change.\nC:L - A torn value yields an out-of-bounds vCPU index, causing the host to read a pointer-sized slot past the vCPU array and then dereference it (`vcpu-\u003eready`, `vcpu-\u003epreempted`, `target-\u003epid`), touching host kernel memory outside the intended object. The read value is never returned to the guest and the offset is not attacker-chosen, so this is a limited disclosure rather than an arbitrary read primitive.\nI:L - `kvm_vcpu_eligible_for_directed_yield()` writes `vcpu-\u003espin_loop.dy_eligible` through the same unvalidated pointer, giving a fixed-offset host-kernel write via an out-of-bounds vCPU reference, and the bogus target also perturbs host scheduling through `yield_to()`. The written value and target address are not attacker-controlled, limiting this to bounded corruption rather than a control-flow hijack primitive.\nA:H - Per the upstream changelog, the torn access lets KVM fetch a vCPU with an out-of-bounds index; the resulting NULL or garbage pointer is dereferenced without any validation, oopsing or panicking the host kernel. A guest crashing the hypervisor takes down the host and every other VM on it."
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              "value": "AV:L - The faulty free is on the driver teardown/reset path (`ena_down()` via ifdown, ethtool ring/channel change, MTU change, XDP detach, or watchdog reset), not on the packet receive path, so entry requires local access to the host even though the bytes that form the bogus sk_buff come from remotely received frames.\nAC:L - With XDP_TX/XDP_REDIRECT traffic flowing, the TX ring always holds uncompleted descriptors, so any down/reset deterministically hits `dev_kfree_skb_any()` on an `xdp_frame`; the attacker can both generate the traffic and induce the teardown, with no race or memory-layout condition outside their control.\nPR:L - In deployments where an XDP program is already attached (a configuration precondition, not an attack step), an unprivileged local user can drive the reset through the ENA watchdog paths that also monitor XDP queues \u2014 missed TX completions and `RESET_SUSPECTED_POLL_STARVATION` under load \u2014 and hypervisor VF resets occur without any local privilege at all.\nUI:N - No victim action is needed; the reset/teardown is initiated by the attacker, the watchdog, or the device itself while XDP frames are in flight.\nS:U - The corruption stays within the kernel\u0027s own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Freeing an `xdp_frame` as an `sk_buff` makes the kernel interpret ~200 bytes of packet headroom as sk_buff fields and returns a driver-owned page into `skbuff_cache`, so subsequent skb allocations can alias attacker-visible network buffers, yielding kernel memory disclosure.\nI:H - This is a full type confusion: `consume_skb()` performs a refcount decrement through a bogus `_skb_refdst`, an indirect call through `skb-\u003edestructor`, page puts from a fabricated `skb_shinfo`, and a `kmem_cache_free()` of a non-slab pointer, giving heap-corruption and control-flow-hijack primitives with attacker-influenced field values.\nA:H - The commit itself states the incorrect frees lead to crashes on VF reset; slab corruption and wild pointer dereferences reliably produce a kernel oops or panic."
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        },
        {
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      ],
      "title": "net: ena: Fix incorrect descriptor free behavior",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/numa: Fix the potential null pointer dereference in task_numa_work()\n\nWhen running stress-ng-vm-segv test, we found a null pointer dereference\nerror in task_numa_work(). Here is the backtrace:\n\n  [323676.066985] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000020\n  ......\n  [323676.067108] CPU: 35 PID: 2694524 Comm: stress-ng-vm-se\n  ......\n  [323676.067113] pstate: 23401009 (nzCv daif +PAN -UAO +TCO +DIT +SSBS BTYPE=--)\n  [323676.067115] pc : vma_migratable+0x1c/0xd0\n  [323676.067122] lr : task_numa_work+0x1ec/0x4e0\n  [323676.067127] sp : ffff8000ada73d20\n  [323676.067128] x29: ffff8000ada73d20 x28: 0000000000000000 x27: 000000003e89f010\n  [323676.067130] x26: 0000000000080000 x25: ffff800081b5c0d8 x24: ffff800081b27000\n  [323676.067133] x23: 0000000000010000 x22: 0000000104d18cc0 x21: ffff0009f7158000\n  [323676.067135] x20: 0000000000000000 x19: 0000000000000000 x18: ffff8000ada73db8\n  [323676.067138] x17: 0001400000000000 x16: ffff800080df40b0 x15: 0000000000000035\n  [323676.067140] x14: ffff8000ada73cc8 x13: 1fffe0017cc72001 x12: ffff8000ada73cc8\n  [323676.067142] x11: ffff80008001160c x10: ffff000be639000c x9 : ffff8000800f4ba4\n  [323676.067145] x8 : ffff000810375000 x7 : ffff8000ada73974 x6 : 0000000000000001\n  [323676.067147] x5 : 0068000b33e26707 x4 : 0000000000000001 x3 : ffff0009f7158000\n  [323676.067149] x2 : 0000000000000041 x1 : 0000000000004400 x0 : 0000000000000000\n  [323676.067152] Call trace:\n  [323676.067153]  vma_migratable+0x1c/0xd0\n  [323676.067155]  task_numa_work+0x1ec/0x4e0\n  [323676.067157]  task_work_run+0x78/0xd8\n  [323676.067161]  do_notify_resume+0x1ec/0x290\n  [323676.067163]  el0_svc+0x150/0x160\n  [323676.067167]  el0t_64_sync_handler+0xf8/0x128\n  [323676.067170]  el0t_64_sync+0x17c/0x180\n  [323676.067173] Code: d2888001 910003fd f9000bf3 aa0003f3 (f9401000)\n  [323676.067177] SMP: stopping secondary CPUs\n  [323676.070184] Starting crashdump kernel...\n\nstress-ng-vm-segv in stress-ng is used to stress test the SIGSEGV error\nhandling function of the system, which tries to cause a SIGSEGV error on\nreturn from unmapping the whole address space of the child process.\n\nNormally this program will not cause kernel crashes. But before the\nmunmap system call returns to user mode, a potential task_numa_work()\nfor numa balancing could be added and executed. In this scenario, since the\nchild process has no vma after munmap, the vma_next() in task_numa_work()\nwill return a null pointer even if the vma iterator restarts from 0.\n\nRecheck the vma pointer before dereferencing it in task_numa_work()."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: KVM: Mark hrtimer to expire in hard interrupt context\n\nLike commit 2c0d278f3293f (\"KVM: LAPIC: Mark hrtimer to expire in hard\ninterrupt context\") and commit 9090825fa9974 (\"KVM: arm/arm64: Let the\ntimer expire in hardirq context on RT\"), On PREEMPT_RT enabled kernels\nunmarked hrtimers are moved into soft interrupt expiry mode by default.\nThen the timers are canceled from an preempt-notifier which is invoked\nwith disabled preemption which is not allowed on PREEMPT_RT.\n\nThe timer callback is short so in could be invoked in hard-IRQ context.\nSo let the timer expire on hard-IRQ context even on -RT.\n\nThis fix a \"scheduling while atomic\" bug for PREEMPT_RT enabled kernels:\n\n BUG: scheduling while atomic: qemu-system-loo/1011/0x00000002\n Modules linked in: amdgpu rfkill nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ns\n CPU: 1 UID: 0 PID: 1011 Comm: qemu-system-loo Tainted: G        W          6.12.0-rc2+ #1774\n Tainted: [W]=WARN\n Hardware name: Loongson Loongson-3A5000-7A1000-1w-CRB/Loongson-LS3A5000-7A1000-1w-CRB, BIOS vUDK2018-LoongArch-V2.0.0-prebeta9 10/21/2022\n Stack : ffffffffffffffff 0000000000000000 9000000004e3ea38 9000000116744000\n         90000001167475a0 0000000000000000 90000001167475a8 9000000005644830\n         90000000058dc000 90000000058dbff8 9000000116747420 0000000000000001\n         0000000000000001 6a613fc938313980 000000000790c000 90000001001c1140\n         00000000000003fe 0000000000000001 000000000000000d 0000000000000003\n         0000000000000030 00000000000003f3 000000000790c000 9000000116747830\n         90000000057ef000 0000000000000000 9000000005644830 0000000000000004\n         0000000000000000 90000000057f4b58 0000000000000001 9000000116747868\n         900000000451b600 9000000005644830 9000000003a13998 0000000010000020\n         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1d\n         ...\n Call Trace:\n [\u003c9000000003a13998\u003e] show_stack+0x38/0x180\n [\u003c9000000004e3ea34\u003e] dump_stack_lvl+0x84/0xc0\n [\u003c9000000003a71708\u003e] __schedule_bug+0x48/0x60\n [\u003c9000000004e45734\u003e] __schedule+0x1114/0x1660\n [\u003c9000000004e46040\u003e] schedule_rtlock+0x20/0x60\n [\u003c9000000004e4e330\u003e] rtlock_slowlock_locked+0x3f0/0x10a0\n [\u003c9000000004e4f038\u003e] rt_spin_lock+0x58/0x80\n [\u003c9000000003b02d68\u003e] hrtimer_cancel_wait_running+0x68/0xc0\n [\u003c9000000003b02e30\u003e] hrtimer_cancel+0x70/0x80\n [\u003cffff80000235eb70\u003e] kvm_restore_timer+0x50/0x1a0 [kvm]\n [\u003cffff8000023616c8\u003e] kvm_arch_vcpu_load+0x68/0x2a0 [kvm]\n [\u003cffff80000234c2d4\u003e] kvm_sched_in+0x34/0x60 [kvm]\n [\u003c9000000003a749a0\u003e] finish_task_switch.isra.0+0x140/0x2e0\n [\u003c9000000004e44a70\u003e] __schedule+0x450/0x1660\n [\u003c9000000004e45cb0\u003e] schedule+0x30/0x180\n [\u003cffff800002354c70\u003e] kvm_vcpu_block+0x70/0x120 [kvm]\n [\u003cffff800002354d80\u003e] kvm_vcpu_halt+0x60/0x3e0 [kvm]\n [\u003cffff80000235b194\u003e] kvm_handle_gspr+0x3f4/0x4e0 [kvm]\n [\u003cffff80000235f548\u003e] kvm_handle_exit+0x1c8/0x260 [kvm]"
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