Vulnerability-Lookup

GHSA-Q96W-JFJR-XWW5

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-07-08 15:31

Details

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

devlink: Release nested relation on devlink free

devlink relation state is normally released from devl_unregister(), which calls devlink_rel_put(). This misses devlink instances that get a nested relation before registration and then fail probe before devl_register() is reached.

That flow can happen for SFs. The child devlink gets linked to its parent before registration, then a later probe error calls devlink_free() directly. Since the instance was never registered, devl_unregister() is not called and devlink->rel is leaked.

Release any pending relation from devlink_free() as well. The registered path is unchanged because devl_unregister() already clears devlink->rel before devlink_free() runs.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53261"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:44Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndevlink: Release nested relation on devlink free\n\ndevlink relation state is normally released from devl_unregister(), which\ncalls devlink_rel_put(). This misses devlink instances that get a nested\nrelation before registration and then fail probe before devl_register() is\nreached.\n\nThat flow can happen for SFs. The child devlink gets linked to its\nparent before registration, then a later probe error calls devlink_free()\ndirectly. Since the instance was never registered, devl_unregister() is not\ncalled and devlink-\u003erel is leaked.\n\nRelease any pending relation from devlink_free() as well. The registered\npath is unchanged because devl_unregister() already clears devlink-\u003erel\nbefore devlink_free() runs.",
  "id": "GHSA-q96w-jfjr-xww5",
  "modified": "2026-07-08T15:31:48Z",
  "published": "2026-06-25T09:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53261"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53261 (GCVE-0-2026-53261)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39

Title

devlink: Release nested relation on devlink free

Summary

In the Linux kernel, the following vulnerability has been resolved: devlink: Release nested relation on devlink free devlink relation state is normally released from devl_unregister(), which calls devlink_rel_put(). This misses devlink instances that get a nested relation before registration and then fail probe before devl_register() is reached. That flow can happen for SFs. The child devlink gets linked to its parent before registration, then a later probe error calls devlink_free() directly. Since the instance was never registered, devl_unregister() is not called and devlink->rel is leaked. Release any pending relation from devlink_free() as well. The registered path is unchanged because devl_unregister() already clears devlink->rel before devlink_free() runs.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/a9137286884703113…
https://git.kernel.org/stable/c/927f96861f939c0b5…
https://git.kernel.org/stable/c/11324d52b0c63f4f2…
https://git.kernel.org/stable/c/3522b21fd7e1863d0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c137743bce02b18c1537d4681aa515f7b80bf0a8 , < a9137286884703113b1c9e6403bd6d7d97b14754 (git) Affected: c137743bce02b18c1537d4681aa515f7b80bf0a8 , < 927f96861f939c0b517d13ed27bf4fabbfc1cfb3 (git) Affected: c137743bce02b18c1537d4681aa515f7b80bf0a8 , < 11324d52b0c63f4f202b35793c6507a575e9a689 (git) Affected: c137743bce02b18c1537d4681aa515f7b80bf0a8 , < 3522b21fd7e1863d0734537737bd59f1b90d0190 (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/devlink/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a9137286884703113b1c9e6403bd6d7d97b14754",
              "status": "affected",
              "version": "c137743bce02b18c1537d4681aa515f7b80bf0a8",
              "versionType": "git"
            },
            {
              "lessThan": "927f96861f939c0b517d13ed27bf4fabbfc1cfb3",
              "status": "affected",
              "version": "c137743bce02b18c1537d4681aa515f7b80bf0a8",
              "versionType": "git"
            },
            {
              "lessThan": "11324d52b0c63f4f202b35793c6507a575e9a689",
              "status": "affected",
              "version": "c137743bce02b18c1537d4681aa515f7b80bf0a8",
              "versionType": "git"
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          ]
        },
        {
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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        }
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          "nodes": [
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              "cpeMatch": [
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                  "versionEndExcluding": "6.12.94",
                  "versionStartIncluding": "6.7",
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                },
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                }
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              "operator": "OR"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndevlink: Release nested relation on devlink free\n\ndevlink relation state is normally released from devl_unregister(), which\ncalls devlink_rel_put(). This misses devlink instances that get a nested\nrelation before registration and then fail probe before devl_register() is\nreached.\n\nThat flow can happen for SFs. The child devlink gets linked to its\nparent before registration, then a later probe error calls devlink_free()\ndirectly. Since the instance was never registered, devl_unregister() is not\ncalled and devlink-\u003erel is leaked.\n\nRelease any pending relation from devlink_free() as well. The registered\npath is unchanged because devl_unregister() already clears devlink-\u003erel\nbefore devlink_free() runs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:39:49.891Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        },
        {
          "url": "https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190"
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      ],
      "title": "devlink: Release nested relation on devlink free",
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    "cveId": "CVE-2026-53261",
    "datePublished": "2026-06-25T08:39:49.891Z",
    "dateReserved": "2026-06-09T07:44:35.394Z",
    "dateUpdated": "2026-06-25T08:39:49.891Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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-Q96W-JFJR-XWW5

CVE-2026-53261 (GCVE-0-2026-53261)

Tags

Sightings

Nomenclature