CVE-2026-53261

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-25. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 8, 2026

Advisory Details (4)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

devlink: Release nested relation on devlink free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754
generic

devlink: Release nested relation on devlink free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3
generic

devlink: Release nested relation on devlink free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190
generic

devlink: Release nested relation on devlink free - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689

Vendor Advisories for CVE-2026-53261(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-18ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (145 versions)7.0.13-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 10× in last 7d / 40× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 168 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 07:28 UTCEG score recompute
  4. 2026-09-18 07:28 UTCVendor advisory
  5. 2026-09-18 07:28 UTCGHSA enrichment
  6. 2026-09-16 14:08 UTCEPSS rescore
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-14 01:22 UTCEG score recompute
  9. 2026-09-14 01:22 UTCVendor advisory
  10. 2026-09-14 01:22 UTCGHSA enrichment
  11. 2026-09-13 16:47 UTCEPSS rescore
  12. 2026-09-12 15:53 UTCEG score recompute
  13. 2026-09-12 15:53 UTCVendor advisory
  14. 2026-09-12 15:53 UTCGHSA enrichment
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-10 09:35 UTCEPSS rescore
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-07 16:01 UTCEPSS rescore
  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-04 05:06 UTCEPSS rescore
  21. 2026-09-02 14:12 UTCEPSS rescore
  22. 2026-09-01 13:54 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-30 19:36 UTCEG score recompute
  25. 2026-08-30 19:36 UTCGHSA enrichment
Show 75 more
  1. 2026-08-30 19:17 UTCEPSS rescore
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-27 23:56 UTCEG score recompute
  5. 2026-08-27 23:56 UTCGHSA enrichment
  6. 2026-08-27 14:25 UTCEPSS rescore
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-24 13:11 UTCEG score recompute
  10. 2026-08-24 13:11 UTCGHSA enrichment
  11. 2026-08-23 10:27 UTCEG score recompute
  12. 2026-08-23 10:27 UTCGHSA enrichment
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-22 10:39 UTCEG score recompute
  15. 2026-08-22 10:39 UTCGHSA enrichment
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-21 07:14 UTCEG score recompute
  18. 2026-08-21 07:14 UTCGHSA enrichment
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-20 07:05 UTCEG score recompute
  21. 2026-08-20 07:05 UTCGHSA enrichment
  22. 2026-08-19 17:04 UTCEPSS rescore
  23. 2026-08-19 01:30 UTCEG score recompute
  24. 2026-08-19 01:30 UTCGHSA enrichment
  25. 2026-08-18 13:48 UTCEPSS rescore
  26. 2026-08-17 13:47 UTCEPSS rescore
  27. 2026-08-16 20:57 UTCEG score recompute
  28. 2026-08-16 20:57 UTCGHSA enrichment
  29. 2026-08-16 14:56 UTCEPSS rescore
  30. 2026-08-16 02:14 UTCEPSS rescore
  31. 2026-08-15 21:08 UTCEG score recompute
  32. 2026-08-15 21:08 UTCGHSA enrichment
  33. 2026-08-15 01:30 UTCEPSS rescore
  34. 2026-08-14 21:22 UTCEG score recompute
  35. 2026-08-14 21:22 UTCGHSA enrichment
  36. 2026-08-13 22:00 UTCEPSS rescore
  37. 2026-08-13 21:33 UTCGHSA enrichment
  38. 2026-08-12 21:42 UTCEG score recompute
  39. 2026-08-12 21:42 UTCGHSA enrichment
  40. 2026-08-12 13:51 UTCEPSS rescore
  41. 2026-08-11 21:56 UTCEG score recompute
  42. 2026-08-11 21:56 UTCGHSA enrichment
  43. 2026-08-11 00:00 UTCEPSS rescore
  44. 2026-08-10 22:11 UTCGHSA enrichment
  45. 2026-08-09 22:25 UTCEG score recompute
  46. 2026-08-09 22:25 UTCGHSA enrichment
  47. 2026-08-09 13:46 UTCEPSS rescore
  48. 2026-08-08 22:40 UTCEG score recompute
  49. 2026-08-08 22:40 UTCGHSA enrichment
  50. 2026-08-08 16:37 UTCEPSS rescore
  51. 2026-08-07 22:54 UTCEG score recompute
  52. 2026-08-07 22:54 UTCGHSA enrichment
  53. 2026-08-06 23:09 UTCEG score recompute
  54. 2026-08-06 23:08 UTCGHSA enrichment
  55. 2026-08-06 13:47 UTCEPSS rescore
  56. 2026-08-05 23:14 UTCEG score recompute
  57. 2026-08-05 23:14 UTCGHSA enrichment
  58. 2026-08-05 19:17 UTCEPSS rescore
  59. 2026-08-04 23:28 UTCEG score recompute
  60. 2026-08-04 23:28 UTCGHSA enrichment
  61. 2026-08-04 15:10 UTCEPSS rescore
  62. 2026-08-04 10:39 UTCEPSS rescore
  63. 2026-08-03 23:43 UTCEG score recompute
  64. 2026-08-03 23:43 UTCGHSA enrichment
  65. 2026-08-03 10:36 UTCEPSS rescore
  66. 2026-08-02 23:57 UTCEG score recompute
  67. 2026-08-02 23:57 UTCGHSA enrichment
  68. 2026-08-02 02:27 UTCEPSS rescore
  69. 2026-08-02 00:12 UTCEG score recompute
  70. 2026-08-02 00:12 UTCGHSA enrichment
  71. 2026-08-01 04:16 UTCEPSS rescore
  72. 2026-08-01 00:26 UTCGHSA enrichment
  73. 2026-07-31 00:38 UTCEG score recompute
  74. 2026-07-31 00:38 UTCGHSA enrichment
  75. 2026-07-30 16:28 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53261?
CVE-2026-53261 is a medium vulnerability published on June 25, 2026. 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 devlinkrelput(). This misses devlink instances that get a nested relation before registration and then…
When was CVE-2026-53261 disclosed?
CVE-2026-53261 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53261 actively exploited?
CVE-2026-53261 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 94.2% of all scored CVEs.
What is the CVSS score of CVE-2026-53261?
CVE-2026-53261 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53261?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53261, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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