Vulnerability-Lookup

FKIE_CVE-2026-53261

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-07-08 15:17

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/devlink/core.c"
          ],
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              "status": "affected",
              "version": "c137743bce02b18c1537d4681aa515f7b80bf0a8",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "c137743bce02b18c1537d4681aa515f7b80bf0a8",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
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          "vendor": "Linux",
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              "version": "6.7"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
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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."
    }
  ],
  "id": "CVE-2026-53261",
  "lastModified": "2026-07-08T15:17:32.770",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "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",
          "version": "3.1"
        },
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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  "published": "2026-06-25T09:16:44.100",
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    },
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-401"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}

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

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6996 records in the last 180 days details

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)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/devlink/core.c"
          ],
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}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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