Vulnerability-Lookup

GHSA-Q4RH-73G2-JF4J

Vulnerability from github – Published: 2026-04-24 15:32 – Updated: 2026-04-24 15:32

Details

In the Linux kernel, the following vulnerability has been resolved:

rxrpc: Fix call removal to use RCU safe deletion

Fix rxrpc call removal from the rxnet->calls list to use list_del_rcu() rather than list_del_init() to prevent stuffing up reading /proc/net/rxrpc/calls from potentially getting into an infinite loop.

This, however, means that list_empty() no longer works on an entry that's been deleted from the list, making it harder to detect prior deletion. Fix this by:

Firstly, make rxrpc_destroy_all_calls() only dump the first ten calls that are unexpectedly still on the list. Limiting the number of steps means there's no need to call cond_resched() or to remove calls from the list here, thereby eliminating the need for rxrpc_put_call() to check for that.

rxrpc_put_call() can then be fixed to unconditionally delete the call from the list as it is the only place that the deletion occurs.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31642"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T15:16:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix call removal to use RCU safe deletion\n\nFix rxrpc call removal from the rxnet-\u003ecalls list to use list_del_rcu()\nrather than list_del_init() to prevent stuffing up reading\n/proc/net/rxrpc/calls from potentially getting into an infinite loop.\n\nThis, however, means that list_empty() no longer works on an entry that\u0027s\nbeen deleted from the list, making it harder to detect prior deletion.  Fix\nthis by:\n\nFirstly, make rxrpc_destroy_all_calls() only dump the first ten calls that\nare unexpectedly still on the list.  Limiting the number of steps means\nthere\u0027s no need to call cond_resched() or to remove calls from the list\nhere, thereby eliminating the need for rxrpc_put_call() to check for that.\n\nrxrpc_put_call() can then be fixed to unconditionally delete the call from\nthe list as it is the only place that the deletion occurs.",
  "id": "GHSA-q4rh-73g2-jf4j",
  "modified": "2026-04-24T15:32:36Z",
  "published": "2026-04-24T15:32:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/146d4ab94cf129ee06cd467cb5c71368a6b5bad6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3be718f659683ad89fad6f1eb66bee99727cae64"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93fc15be44a35b8e3c58d0238ac0d9b7c53465ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ac5f54691be06a32246179d41be2d73598036deb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c63abf25203b50243fe228090526f9dbf37727bd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31642 (GCVE-0-2026-31642)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:44 – Updated: 2026-04-24 14:44

Title

rxrpc: Fix call removal to use RCU safe deletion

Summary

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix call removal to use RCU safe deletion Fix rxrpc call removal from the rxnet->calls list to use list_del_rcu() rather than list_del_init() to prevent stuffing up reading /proc/net/rxrpc/calls from potentially getting into an infinite loop. This, however, means that list_empty() no longer works on an entry that's been deleted from the list, making it harder to detect prior deletion. Fix this by: Firstly, make rxrpc_destroy_all_calls() only dump the first ten calls that are unexpectedly still on the list. Limiting the number of steps means there's no need to call cond_resched() or to remove calls from the list here, thereby eliminating the need for rxrpc_put_call() to check for that. rxrpc_put_call() can then be fixed to unconditionally delete the call from the list as it is the only place that the deletion occurs.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/93fc15be44a35b8e3…
	https://git.kernel.org/stable/c/c63abf25203b50243…
	https://git.kernel.org/stable/c/3be718f659683ad89…
	https://git.kernel.org/stable/c/ac5f54691be06a322…
	https://git.kernel.org/stable/c/146d4ab94cf129ee0…

Impacted products

Vendor

Product

Version

Linux

Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < 93fc15be44a35b8e3c58d0238ac0d9b7c53465ff (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < c63abf25203b50243fe228090526f9dbf37727bd (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < 3be718f659683ad89fad6f1eb66bee99727cae64 (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < ac5f54691be06a32246179d41be2d73598036deb (git)
Affected: 2baec2c3f854d1f79c7bb28386484e144e864a14 , < 146d4ab94cf129ee06cd467cb5c71368a6b5bad6 (git)

Linux

Affected: 4.13
Unaffected: 0 , < 4.13 (semver)
Unaffected: 6.6.135 , ≤ 6.6.* (semver)
Unaffected: 6.12.82 , ≤ 6.12.* (semver)
Unaffected: 6.18.23 , ≤ 6.18.* (semver)
Unaffected: 6.19.13 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/trace/events/rxrpc.h",
            "net/rxrpc/call_object.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "2baec2c3f854d1f79c7bb28386484e144e864a14",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/trace/events/rxrpc.h",
            "net/rxrpc/call_object.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.13"
            },
            {
              "lessThan": "4.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.82",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "4.13",
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                }
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              "negate": false,
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        }
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        "dateUpdated": "2026-04-24T14:44:56.888Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/3be718f659683ad89fad6f1eb66bee99727cae64"
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        },
        {
          "url": "https://git.kernel.org/stable/c/146d4ab94cf129ee06cd467cb5c71368a6b5bad6"
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      ],
      "title": "rxrpc: Fix call removal to use RCU safe deletion",
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      }
    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31642",
    "datePublished": "2026-04-24T14:44:56.888Z",
    "dateReserved": "2026-03-09T15:48:24.127Z",
    "dateUpdated": "2026-04-24T14:44:56.888Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-Q4RH-73G2-JF4J

CVE-2026-31642 (GCVE-0-2026-31642)

Tags

Sightings

Nomenclature