CVE-2022-49931 (GCVE-0-2022-49931)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:11 – Updated: 2026-08-05 08:56
VLAI
Title
IB/hfi1: Correctly move list in sc_disable()
Summary
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Correctly move list in sc_disable() Commit 13bac861952a ("IB/hfi1: Fix abba locking issue with sc_disable()") incorrectly tries to move a list from one list head to another. The result is a kernel crash. The crash is triggered when a link goes down and there are waiters for a send to complete. The following signature is seen: BUG: kernel NULL pointer dereference, address: 0000000000000030 [...] Call Trace: sc_disable+0x1ba/0x240 [hfi1] pio_freeze+0x3d/0x60 [hfi1] handle_freeze+0x27/0x1b0 [hfi1] process_one_work+0x1b0/0x380 ? process_one_work+0x380/0x380 worker_thread+0x30/0x360 ? process_one_work+0x380/0x380 kthread+0xd7/0x100 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 The fix is to use the correct call to move the list.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 14:55 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d997d4e4365f7e59cf6b59c70f966c56d704b64f , < 25760a41e3802f54aadcc31385543665ab349b8e (git)
Affected: d98883f6c33e0d960afedcecaa92fc2b61fec383 , < 7c4260f8f188df32414a5ecad63e8b934c2aa3f0 (git)
Affected: 13bac861952a78664907a0f927d3e874e9a59034 , < ba95409d6b580501ff6d78efd00064f7df669926 (git)
Affected: 13bac861952a78664907a0f927d3e874e9a59034 , < b8bcff99b07cc175a6ee12a52db51cdd2229586c (git)
Affected: 13bac861952a78664907a0f927d3e874e9a59034 , < 1afac08b39d85437187bb2a92d89a741b1078f55 (git)
Affected: 5d33bd6b4d4d035e42733592899918a18f2540da (git)
Affected: 5.4.157 , < 5.4.224 (semver)
Affected: 5.10.77 , < 5.10.154 (semver)
Affected: 5.14.16 , < 5.15 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.4.224 , ≤ 5.4.* (semver)
Unaffected: 5.10.154 , ≤ 5.10.* (semver)
Unaffected: 5.15.78 , ≤ 5.15.* (semver)
Unaffected: 6.0.8 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/hfi1: Correctly move list in sc_disable()\n\nCommit 13bac861952a (\"IB/hfi1: Fix abba locking issue with sc_disable()\")\nincorrectly tries to move a list from one list head to another.  The\nresult is a kernel crash.\n\nThe crash is triggered when a link goes down and there are waiters for a\nsend to complete.  The following signature is seen:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000030\n  [...]\n  Call Trace:\n   sc_disable+0x1ba/0x240 [hfi1]\n   pio_freeze+0x3d/0x60 [hfi1]\n   handle_freeze+0x27/0x1b0 [hfi1]\n   process_one_work+0x1b0/0x380\n   ? process_one_work+0x380/0x380\n   worker_thread+0x30/0x360\n   ? process_one_work+0x380/0x380\n   kthread+0xd7/0x100\n   ? kthread_complete_and_exit+0x20/0x20\n   ret_from_fork+0x1f/0x30\n\nThe fix is to use the correct call to move the list."
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: IB/hfi1: Mover correctamente la lista en sc_disable(). El commit 13bac861952a (\"IB/hfi1: Solucionar el problema de bloqueo de abba con sc_disable()\") intenta mover incorrectamente una lista de una cabecera a otra. Esto provoca un fallo del kernel. El fallo se activa cuando un enlace se cae y hay esperas para que se complete un env\u00edo. Se observa la siguiente firma: ERROR: desreferencia de puntero nulo del kernel, direcci\u00f3n: 000000000000030 [...] Seguimiento de llamadas:  sc_disable+0x1ba/0x240 [hfi1] pio_freeze+0x3d/0x60 [hfi1] handle_freeze+0x27/0x1b0 [hfi1] process_one_work+0x1b0/0x380 ? process_one_work+0x380/0x380 worker_thread+0x30/0x360 ? process_one_work+0x380/0x380 kthread+0xd7/0x100 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30 La soluci\u00f3n es utilizar la llamada correcta para mover la lista."
          }
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        "id": "CVE-2022-49931",
        "lastModified": "2026-08-04T10:17:59.820",
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                "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",
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              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
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              "ssvcData": {
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                "options": [
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                "version": "2.0.3"
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    "redhat_vex": {
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      "current_release_date": "2026-08-05T10:27:02+00:00",
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      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: IB/hfi1: Correctly move list in sc_disable()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49931.json",
      "version": "3"
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    "suse_vex": {
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      "source": "SUSE CSAF VEX",
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              {
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            ],
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                    "description": "CWE-476 NULL Pointer Dereference",
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                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T14:16:41.629Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
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        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
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            }
          ],
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            {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49931",
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        "dateReserved": "2025-05-01T14:05:17.254Z",
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}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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