CVE-2022-49003 (GCVE-0-2022-49003)
Vulnerability from cvelistv5
Published
2024-10-21 20:06
Modified
2025-05-04 08:27
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme: fix SRCU protection of nvme_ns_head list Walking the nvme_ns_head siblings list is protected by the head's srcu in nvme_ns_head_submit_bio() but not nvme_mpath_revalidate_paths(). Removing namespaces from the list also fails to synchronize the srcu. Concurrent scan work can therefore cause use-after-frees. Hold the head's srcu lock in nvme_mpath_revalidate_paths() and synchronize with the srcu, not the global RCU, in nvme_ns_remove(). Observed the following panic when making NVMe/RDMA connections with native multipath on the Rocky Linux 8.6 kernel (it seems the upstream kernel has the same race condition). Disassembly shows the faulting instruction is cmp 0x50(%rdx),%rcx; computing capacity != get_capacity(ns->disk). Address 0x50 is dereferenced because ns->disk is NULL. The NULL disk appears to be the result of concurrent scan work freeing the namespace (note the log line in the middle of the panic). [37314.206036] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050 [37314.206036] nvme0n3: detected capacity change from 0 to 11811160064 [37314.299753] PGD 0 P4D 0 [37314.299756] Oops: 0000 [#1] SMP PTI [37314.299759] CPU: 29 PID: 322046 Comm: kworker/u98:3 Kdump: loaded Tainted: G W X --------- - - 4.18.0-372.32.1.el8test86.x86_64 #1 [37314.299762] Hardware name: Dell Inc. PowerEdge R720/0JP31P, BIOS 2.7.0 05/23/2018 [37314.299763] Workqueue: nvme-wq nvme_scan_work [nvme_core] [37314.299783] RIP: 0010:nvme_mpath_revalidate_paths+0x26/0xb0 [nvme_core] [37314.299790] Code: 1f 44 00 00 66 66 66 66 90 55 53 48 8b 5f 50 48 8b 83 c8 c9 00 00 48 8b 13 48 8b 48 50 48 39 d3 74 20 48 8d 42 d0 48 8b 50 20 <48> 3b 4a 50 74 05 f0 80 60 70 ef 48 8b 50 30 48 8d 42 d0 48 39 d3 [37315.058803] RSP: 0018:ffffabe28f913d10 EFLAGS: 00010202 [37315.121316] RAX: ffff927a077da800 RBX: ffff92991dd70000 RCX: 0000000001600000 [37315.206704] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff92991b719800 [37315.292106] RBP: ffff929a6b70c000 R08: 000000010234cd4a R09: c0000000ffff7fff [37315.377501] R10: 0000000000000001 R11: ffffabe28f913a30 R12: 0000000000000000 [37315.462889] R13: ffff92992716600c R14: ffff929964e6e030 R15: ffff92991dd70000 [37315.548286] FS: 0000000000000000(0000) GS:ffff92b87fb80000(0000) knlGS:0000000000000000 [37315.645111] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [37315.713871] CR2: 0000000000000050 CR3: 0000002208810006 CR4: 00000000000606e0 [37315.799267] Call Trace: [37315.828515] nvme_update_ns_info+0x1ac/0x250 [nvme_core] [37315.892075] nvme_validate_or_alloc_ns+0x2ff/0xa00 [nvme_core] [37315.961871] ? __blk_mq_free_request+0x6b/0x90 [37316.015021] nvme_scan_work+0x151/0x240 [nvme_core] [37316.073371] process_one_work+0x1a7/0x360 [37316.121318] ? create_worker+0x1a0/0x1a0 [37316.168227] worker_thread+0x30/0x390 [37316.212024] ? create_worker+0x1a0/0x1a0 [37316.258939] kthread+0x10a/0x120 [37316.297557] ? set_kthread_struct+0x50/0x50 [37316.347590] ret_from_fork+0x35/0x40 [37316.390360] Modules linked in: nvme_rdma nvme_tcp(X) nvme_fabrics nvme_core netconsole iscsi_tcp libiscsi_tcp dm_queue_length dm_service_time nf_conntrack_netlink br_netfilter bridge stp llc overlay nft_chain_nat ipt_MASQUERADE nf_nat xt_addrtype xt_CT nft_counter xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_comment xt_multiport nft_compat nf_tables libcrc32c nfnetlink dm_multipath tg3 rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm intel_rapl_msr iTCO_wdt iTCO_vendor_support dcdbas intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ipmi_ssif kvm irqbypass crct10dif_pclmul crc32_pclmul mlx5_ib ghash_clmulni_intel ib_uverbs rapl intel_cstate intel_uncore ib_core ipmi_si joydev mei_me pcspkr ipmi_devintf mei lpc_ich wmi ipmi_msghandler acpi_power_meter ex ---truncated---
References
Impacted products
Vendor Product Version
Linux Linux Version: e7d65803e2bb5bc739548b67a5fc72c626cf7e3b
Version: e7d65803e2bb5bc739548b67a5fc72c626cf7e3b
Version: e7d65803e2bb5bc739548b67a5fc72c626cf7e3b
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{
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              "content": {
                "id": "CVE-2022-49003",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:14:55.180723Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/core.c",
            "drivers/nvme/host/multipath.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.15.82",
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              "versionType": "semver"
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              "version": "6.1",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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                  "vulnerable": true
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: fix SRCU protection of nvme_ns_head list\n\nWalking the nvme_ns_head siblings list is protected by the head\u0027s srcu\nin nvme_ns_head_submit_bio() but not nvme_mpath_revalidate_paths().\nRemoving namespaces from the list also fails to synchronize the srcu.\nConcurrent scan work can therefore cause use-after-frees.\n\nHold the head\u0027s srcu lock in nvme_mpath_revalidate_paths() and\nsynchronize with the srcu, not the global RCU, in nvme_ns_remove().\n\nObserved the following panic when making NVMe/RDMA connections\nwith native multipath on the Rocky Linux 8.6 kernel\n(it seems the upstream kernel has the same race condition).\nDisassembly shows the faulting instruction is cmp 0x50(%rdx),%rcx;\ncomputing capacity != get_capacity(ns-\u003edisk).\nAddress 0x50 is dereferenced because ns-\u003edisk is NULL.\nThe NULL disk appears to be the result of concurrent scan work\nfreeing the namespace (note the log line in the middle of the panic).\n\n[37314.206036] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050\n[37314.206036] nvme0n3: detected capacity change from 0 to 11811160064\n[37314.299753] PGD 0 P4D 0\n[37314.299756] Oops: 0000 [#1] SMP PTI\n[37314.299759] CPU: 29 PID: 322046 Comm: kworker/u98:3 Kdump: loaded Tainted: G        W      X --------- -  - 4.18.0-372.32.1.el8test86.x86_64 #1\n[37314.299762] Hardware name: Dell Inc. PowerEdge R720/0JP31P, BIOS 2.7.0 05/23/2018\n[37314.299763] Workqueue: nvme-wq nvme_scan_work [nvme_core]\n[37314.299783] RIP: 0010:nvme_mpath_revalidate_paths+0x26/0xb0 [nvme_core]\n[37314.299790] Code: 1f 44 00 00 66 66 66 66 90 55 53 48 8b 5f 50 48 8b 83 c8 c9 00 00 48 8b 13 48 8b 48 50 48 39 d3 74 20 48 8d 42 d0 48 8b 50 20 \u003c48\u003e 3b 4a 50 74 05 f0 80 60 70 ef 48 8b 50 30 48 8d 42 d0 48 39 d3\n[37315.058803] RSP: 0018:ffffabe28f913d10 EFLAGS: 00010202\n[37315.121316] RAX: ffff927a077da800 RBX: ffff92991dd70000 RCX: 0000000001600000\n[37315.206704] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff92991b719800\n[37315.292106] RBP: ffff929a6b70c000 R08: 000000010234cd4a R09: c0000000ffff7fff\n[37315.377501] R10: 0000000000000001 R11: ffffabe28f913a30 R12: 0000000000000000\n[37315.462889] R13: ffff92992716600c R14: ffff929964e6e030 R15: ffff92991dd70000\n[37315.548286] FS:  0000000000000000(0000) GS:ffff92b87fb80000(0000) knlGS:0000000000000000\n[37315.645111] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[37315.713871] CR2: 0000000000000050 CR3: 0000002208810006 CR4: 00000000000606e0\n[37315.799267] Call Trace:\n[37315.828515]  nvme_update_ns_info+0x1ac/0x250 [nvme_core]\n[37315.892075]  nvme_validate_or_alloc_ns+0x2ff/0xa00 [nvme_core]\n[37315.961871]  ? __blk_mq_free_request+0x6b/0x90\n[37316.015021]  nvme_scan_work+0x151/0x240 [nvme_core]\n[37316.073371]  process_one_work+0x1a7/0x360\n[37316.121318]  ? create_worker+0x1a0/0x1a0\n[37316.168227]  worker_thread+0x30/0x390\n[37316.212024]  ? create_worker+0x1a0/0x1a0\n[37316.258939]  kthread+0x10a/0x120\n[37316.297557]  ? set_kthread_struct+0x50/0x50\n[37316.347590]  ret_from_fork+0x35/0x40\n[37316.390360] Modules linked in: nvme_rdma nvme_tcp(X) nvme_fabrics nvme_core netconsole iscsi_tcp libiscsi_tcp dm_queue_length dm_service_time nf_conntrack_netlink br_netfilter bridge stp llc overlay nft_chain_nat ipt_MASQUERADE nf_nat xt_addrtype xt_CT nft_counter xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_comment xt_multiport nft_compat nf_tables libcrc32c nfnetlink dm_multipath tg3 rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm intel_rapl_msr iTCO_wdt iTCO_vendor_support dcdbas intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ipmi_ssif kvm irqbypass crct10dif_pclmul crc32_pclmul mlx5_ib ghash_clmulni_intel ib_uverbs rapl intel_cstate intel_uncore ib_core ipmi_si joydev mei_me pcspkr ipmi_devintf mei lpc_ich wmi ipmi_msghandler acpi_power_meter ex\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:27:51.238Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/787d81d4eb150e443e5d1276c6e8f03cfecc2302"
        },
        {
          "url": "https://git.kernel.org/stable/c/5b566d09ab1b975566a53f9c5466ee260d087582"
        },
        {
          "url": "https://git.kernel.org/stable/c/899d2a05dc14733cfba6224083c6b0dd5a738590"
        }
      ],
      "title": "nvme: fix SRCU protection of nvme_ns_head list",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49003",
    "datePublished": "2024-10-21T20:06:16.737Z",
    "dateReserved": "2024-08-22T01:27:53.642Z",
    "dateUpdated": "2025-05-04T08:27:51.238Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49003\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:14:55.180723Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:14:58.358Z\"}}], \"cna\": {\"title\": \"nvme: fix SRCU protection of nvme_ns_head list\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e7d65803e2bb5bc739548b67a5fc72c626cf7e3b\", \"lessThan\": \"787d81d4eb150e443e5d1276c6e8f03cfecc2302\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7d65803e2bb5bc739548b67a5fc72c626cf7e3b\", \"lessThan\": \"5b566d09ab1b975566a53f9c5466ee260d087582\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e7d65803e2bb5bc739548b67a5fc72c626cf7e3b\", \"lessThan\": \"899d2a05dc14733cfba6224083c6b0dd5a738590\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/nvme/host/core.c\", \"drivers/nvme/host/multipath.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.82\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/nvme/host/core.c\", \"drivers/nvme/host/multipath.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/787d81d4eb150e443e5d1276c6e8f03cfecc2302\"}, {\"url\": \"https://git.kernel.org/stable/c/5b566d09ab1b975566a53f9c5466ee260d087582\"}, {\"url\": \"https://git.kernel.org/stable/c/899d2a05dc14733cfba6224083c6b0dd5a738590\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnvme: fix SRCU protection of nvme_ns_head list\\n\\nWalking the nvme_ns_head siblings list is protected by the head\u0027s srcu\\nin nvme_ns_head_submit_bio() but not nvme_mpath_revalidate_paths().\\nRemoving namespaces from the list also fails to synchronize the srcu.\\nConcurrent scan work can therefore cause use-after-frees.\\n\\nHold the head\u0027s srcu lock in nvme_mpath_revalidate_paths() and\\nsynchronize with the srcu, not the global RCU, in nvme_ns_remove().\\n\\nObserved the following panic when making NVMe/RDMA connections\\nwith native multipath on the Rocky Linux 8.6 kernel\\n(it seems the upstream kernel has the same race condition).\\nDisassembly shows the faulting instruction is cmp 0x50(%rdx),%rcx;\\ncomputing capacity != get_capacity(ns-\u003edisk).\\nAddress 0x50 is dereferenced because ns-\u003edisk is NULL.\\nThe NULL disk appears to be the result of concurrent scan work\\nfreeing the namespace (note the log line in the middle of the panic).\\n\\n[37314.206036] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050\\n[37314.206036] nvme0n3: detected capacity change from 0 to 11811160064\\n[37314.299753] PGD 0 P4D 0\\n[37314.299756] Oops: 0000 [#1] SMP PTI\\n[37314.299759] CPU: 29 PID: 322046 Comm: kworker/u98:3 Kdump: loaded Tainted: G        W      X --------- -  - 4.18.0-372.32.1.el8test86.x86_64 #1\\n[37314.299762] Hardware name: Dell Inc. PowerEdge R720/0JP31P, BIOS 2.7.0 05/23/2018\\n[37314.299763] Workqueue: nvme-wq nvme_scan_work [nvme_core]\\n[37314.299783] RIP: 0010:nvme_mpath_revalidate_paths+0x26/0xb0 [nvme_core]\\n[37314.299790] Code: 1f 44 00 00 66 66 66 66 90 55 53 48 8b 5f 50 48 8b 83 c8 c9 00 00 48 8b 13 48 8b 48 50 48 39 d3 74 20 48 8d 42 d0 48 8b 50 20 \u003c48\u003e 3b 4a 50 74 05 f0 80 60 70 ef 48 8b 50 30 48 8d 42 d0 48 39 d3\\n[37315.058803] RSP: 0018:ffffabe28f913d10 EFLAGS: 00010202\\n[37315.121316] RAX: ffff927a077da800 RBX: ffff92991dd70000 RCX: 0000000001600000\\n[37315.206704] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff92991b719800\\n[37315.292106] RBP: ffff929a6b70c000 R08: 000000010234cd4a R09: c0000000ffff7fff\\n[37315.377501] R10: 0000000000000001 R11: ffffabe28f913a30 R12: 0000000000000000\\n[37315.462889] R13: ffff92992716600c R14: ffff929964e6e030 R15: ffff92991dd70000\\n[37315.548286] FS:  0000000000000000(0000) GS:ffff92b87fb80000(0000) knlGS:0000000000000000\\n[37315.645111] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n[37315.713871] CR2: 0000000000000050 CR3: 0000002208810006 CR4: 00000000000606e0\\n[37315.799267] Call Trace:\\n[37315.828515]  nvme_update_ns_info+0x1ac/0x250 [nvme_core]\\n[37315.892075]  nvme_validate_or_alloc_ns+0x2ff/0xa00 [nvme_core]\\n[37315.961871]  ? __blk_mq_free_request+0x6b/0x90\\n[37316.015021]  nvme_scan_work+0x151/0x240 [nvme_core]\\n[37316.073371]  process_one_work+0x1a7/0x360\\n[37316.121318]  ? create_worker+0x1a0/0x1a0\\n[37316.168227]  worker_thread+0x30/0x390\\n[37316.212024]  ? create_worker+0x1a0/0x1a0\\n[37316.258939]  kthread+0x10a/0x120\\n[37316.297557]  ? set_kthread_struct+0x50/0x50\\n[37316.347590]  ret_from_fork+0x35/0x40\\n[37316.390360] Modules linked in: nvme_rdma nvme_tcp(X) nvme_fabrics nvme_core netconsole iscsi_tcp libiscsi_tcp dm_queue_length dm_service_time nf_conntrack_netlink br_netfilter bridge stp llc overlay nft_chain_nat ipt_MASQUERADE nf_nat xt_addrtype xt_CT nft_counter xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_comment xt_multiport nft_compat nf_tables libcrc32c nfnetlink dm_multipath tg3 rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser libiscsi scsi_transport_iscsi ib_umad rdma_cm ib_ipoib iw_cm ib_cm intel_rapl_msr iTCO_wdt iTCO_vendor_support dcdbas intel_rapl_common sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ipmi_ssif kvm irqbypass crct10dif_pclmul crc32_pclmul mlx5_ib ghash_clmulni_intel ib_uverbs rapl intel_cstate intel_uncore ib_core ipmi_si joydev mei_me pcspkr ipmi_devintf mei lpc_ich wmi ipmi_msghandler acpi_power_meter ex\\n---truncated---\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T08:12:15.244Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49003\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T08:12:15.244Z\", \"dateReserved\": \"2024-08-22T01:27:53.642Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:16.737Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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