CVE-2022-49063 (GCVE-0-2022-49063)
Vulnerability from cvelistv5
Published
2025-02-26 01:54
Modified
2026-05-11 18:52
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ice: arfs: fix use-after-free when freeing @rx_cpu_rmap The CI testing bots triggered the following splat: [ 718.203054] BUG: KASAN: use-after-free in free_irq_cpu_rmap+0x53/0x80 [ 718.206349] Read of size 4 at addr ffff8881bd127e00 by task sh/20834 [ 718.212852] CPU: 28 PID: 20834 Comm: sh Kdump: loaded Tainted: G S W IOE 5.17.0-rc8_nextqueue-devqueue-02643-g23f3121aca93 #1 [ 718.219695] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0012.070720200218 07/07/2020 [ 718.223418] Call Trace: [ 718.227139] [ 718.230783] dump_stack_lvl+0x33/0x42 [ 718.234431] print_address_description.constprop.9+0x21/0x170 [ 718.238177] ? free_irq_cpu_rmap+0x53/0x80 [ 718.241885] ? free_irq_cpu_rmap+0x53/0x80 [ 718.245539] kasan_report.cold.18+0x7f/0x11b [ 718.249197] ? free_irq_cpu_rmap+0x53/0x80 [ 718.252852] free_irq_cpu_rmap+0x53/0x80 [ 718.256471] ice_free_cpu_rx_rmap.part.11+0x37/0x50 [ice] [ 718.260174] ice_remove_arfs+0x5f/0x70 [ice] [ 718.263810] ice_rebuild_arfs+0x3b/0x70 [ice] [ 718.267419] ice_rebuild+0x39c/0xb60 [ice] [ 718.270974] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 718.274472] ? ice_init_phy_user_cfg+0x360/0x360 [ice] [ 718.278033] ? delay_tsc+0x4a/0xb0 [ 718.281513] ? preempt_count_sub+0x14/0xc0 [ 718.284984] ? delay_tsc+0x8f/0xb0 [ 718.288463] ice_do_reset+0x92/0xf0 [ice] [ 718.292014] ice_pci_err_resume+0x91/0xf0 [ice] [ 718.295561] pci_reset_function+0x53/0x80 <...> [ 718.393035] Allocated by task 690: [ 718.433497] Freed by task 20834: [ 718.495688] Last potentially related work creation: [ 718.568966] The buggy address belongs to the object at ffff8881bd127e00 which belongs to the cache kmalloc-96 of size 96 [ 718.574085] The buggy address is located 0 bytes inside of 96-byte region [ffff8881bd127e00, ffff8881bd127e60) [ 718.579265] The buggy address belongs to the page: [ 718.598905] Memory state around the buggy address: [ 718.601809] ffff8881bd127d00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 718.604796] ffff8881bd127d80: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 718.607794] >ffff8881bd127e00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 718.610811] ^ [ 718.613819] ffff8881bd127e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 718.617107] ffff8881bd127f00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc This is due to that free_irq_cpu_rmap() is always being called *after* (devm_)free_irq() and thus it tries to work with IRQ descs already freed. For example, on device reset the driver frees the rmap right before allocating a new one (the splat above). Make rmap creation and freeing function symmetrical with {request,free}_irq() calls i.e. do that on ifup/ifdown instead of device probe/remove/resume. These operations can be performed independently from the actual device aRFS configuration. Also, make sure ice_vsi_free_irq() clears IRQ affinity notifiers only when aRFS is disabled -- otherwise, CPU rmap sets and clears its own and they must not be touched manually.
References
Impacted products
Vendor Product Version
Linux Linux Version: 28bf26724fdb0e02267d19e280d6717ee810a10d
Version: 28bf26724fdb0e02267d19e280d6717ee810a10d
Version: 28bf26724fdb0e02267d19e280d6717ee810a10d
Version: 28bf26724fdb0e02267d19e280d6717ee810a10d
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{
  "containers": {
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "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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            "other": {
              "content": {
                "id": "CVE-2022-49063",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
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                  {
                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2025-02-27T18:17:43.737630Z",
                "version": "2.0.3"
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        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
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        "providerMetadata": {
          "dateUpdated": "2025-02-27T18:22:35.691Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
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        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice_arfs.c",
            "drivers/net/ethernet/intel/ice/ice_lib.c",
            "drivers/net/ethernet/intel/ice/ice_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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            {
              "lessThan": "618df75f2e30c7838a3e010ca32cd4893ec9fe33",
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice_arfs.c",
            "drivers/net/ethernet/intel/ice/ice_lib.c",
            "drivers/net/ethernet/intel/ice/ice_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.8"
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              "status": "unaffected",
              "version": "0",
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              "status": "unaffected",
              "version": "5.10.238",
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.184",
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              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
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      "cpeApplicability": [
        {
          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.238",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: arfs: fix use-after-free when freeing @rx_cpu_rmap\n\nThe CI testing bots triggered the following splat:\n\n[  718.203054] BUG: KASAN: use-after-free in free_irq_cpu_rmap+0x53/0x80\n[  718.206349] Read of size 4 at addr ffff8881bd127e00 by task sh/20834\n[  718.212852] CPU: 28 PID: 20834 Comm: sh Kdump: loaded Tainted: G S      W IOE     5.17.0-rc8_nextqueue-devqueue-02643-g23f3121aca93 #1\n[  718.219695] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0012.070720200218 07/07/2020\n[  718.223418] Call Trace:\n[  718.227139]\n[  718.230783]  dump_stack_lvl+0x33/0x42\n[  718.234431]  print_address_description.constprop.9+0x21/0x170\n[  718.238177]  ? free_irq_cpu_rmap+0x53/0x80\n[  718.241885]  ? free_irq_cpu_rmap+0x53/0x80\n[  718.245539]  kasan_report.cold.18+0x7f/0x11b\n[  718.249197]  ? free_irq_cpu_rmap+0x53/0x80\n[  718.252852]  free_irq_cpu_rmap+0x53/0x80\n[  718.256471]  ice_free_cpu_rx_rmap.part.11+0x37/0x50 [ice]\n[  718.260174]  ice_remove_arfs+0x5f/0x70 [ice]\n[  718.263810]  ice_rebuild_arfs+0x3b/0x70 [ice]\n[  718.267419]  ice_rebuild+0x39c/0xb60 [ice]\n[  718.270974]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20\n[  718.274472]  ? ice_init_phy_user_cfg+0x360/0x360 [ice]\n[  718.278033]  ? delay_tsc+0x4a/0xb0\n[  718.281513]  ? preempt_count_sub+0x14/0xc0\n[  718.284984]  ? delay_tsc+0x8f/0xb0\n[  718.288463]  ice_do_reset+0x92/0xf0 [ice]\n[  718.292014]  ice_pci_err_resume+0x91/0xf0 [ice]\n[  718.295561]  pci_reset_function+0x53/0x80\n\u003c...\u003e\n[  718.393035] Allocated by task 690:\n[  718.433497] Freed by task 20834:\n[  718.495688] Last potentially related work creation:\n[  718.568966] The buggy address belongs to the object at ffff8881bd127e00\n                which belongs to the cache kmalloc-96 of size 96\n[  718.574085] The buggy address is located 0 bytes inside of\n                96-byte region [ffff8881bd127e00, ffff8881bd127e60)\n[  718.579265] The buggy address belongs to the page:\n[  718.598905] Memory state around the buggy address:\n[  718.601809]  ffff8881bd127d00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n[  718.604796]  ffff8881bd127d80: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc\n[  718.607794] \u003effff8881bd127e00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n[  718.610811]                    ^\n[  718.613819]  ffff8881bd127e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc\n[  718.617107]  ffff8881bd127f00: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n\nThis is due to that free_irq_cpu_rmap() is always being called\n*after* (devm_)free_irq() and thus it tries to work with IRQ descs\nalready freed. For example, on device reset the driver frees the\nrmap right before allocating a new one (the splat above).\nMake rmap creation and freeing function symmetrical with\n{request,free}_irq() calls i.e. do that on ifup/ifdown instead\nof device probe/remove/resume. These operations can be performed\nindependently from the actual device aRFS configuration.\nAlso, make sure ice_vsi_free_irq() clears IRQ affinity notifiers\nonly when aRFS is disabled -- otherwise, CPU rmap sets and clears\nits own and they must not be touched manually."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T18:52:18.679Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ba2f6ec28733fb6b24ed086e676df3df4c138f3f"
        },
        {
          "url": "https://git.kernel.org/stable/c/618df75f2e30c7838a3e010ca32cd4893ec9fe33"
        },
        {
          "url": "https://git.kernel.org/stable/c/d08d2fb6d99d82da1c63aba5c0d1c6f237e150f3"
        },
        {
          "url": "https://git.kernel.org/stable/c/d7442f512b71fc63a99c8a801422dde4fbbf9f93"
        }
      ],
      "title": "ice: arfs: fix use-after-free when freeing @rx_cpu_rmap",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49063",
    "datePublished": "2025-02-26T01:54:32.460Z",
    "dateReserved": "2025-02-26T01:49:39.244Z",
    "dateUpdated": "2026-05-11T18:52:18.679Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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