CVE-2025-13350

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Ubuntu Linux 6.8 GA retains the legacy AF_UNIX garbage collector but backports upstream commit 8594d9b85c07 ("af_unix: Don’t call skb_get() for OOB skb"). When orphaned MSG_OOB sockets hit unix_gc(), the garbage collector still calls kfree_skb() as if OOB SKBs held two references; on Ubuntu Linux 6.8 (Noble Numbat) kernel tree, they have only the queue reference, so the buffer is freed while still reachable and subsequent queue walks dereference freed memory, yielding a reliable local privilege escalation (LPE) caused by a use-after-free (UAF). Ubuntu builds that have already taken the new GC stack from commit 4090fa373f0e, and mainline Linux kernels shipping that infrastructure are unaffected because they no longer execute the legacy collector path. This issue affects Ubuntu Linux from 6.8.0-56.58 before 6.8.0-84.84.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

March 5, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

oss-security - CVE-2025-13350 for Ubuntu Linux kernel

http://www.openwall.com/lists/oss-security/2026/03/05/7
generic

Bug #2121515 “Linux refcount imbalance in af_unix subsystem” : Bugs : linux package : Ubuntu

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2121515

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 26× 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.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-16 14:06 UTCEPSS rescore
  3. 2026-09-16 05:13 UTCEPSS rescore
  4. 2026-09-15 03:08 UTCEPSS rescore
  5. 2026-09-13 16:45 UTCEPSS rescore
  6. 2026-09-12 14:59 UTCEPSS rescore
  7. 2026-09-11 14:51 UTCEPSS rescore
  8. 2026-09-11 09:35 UTCEPSS rescore
  9. 2026-09-10 09:33 UTCEPSS rescore
  10. 2026-09-08 21:59 UTCEPSS rescore
  11. 2026-09-07 16:00 UTCEPSS rescore
  12. 2026-09-06 13:46 UTCEPSS rescore
  13. 2026-09-04 13:59 UTCEPSS rescore
  14. 2026-09-04 05:05 UTCEPSS rescore
  15. 2026-09-02 14:10 UTCEPSS rescore
  16. 2026-09-01 13:52 UTCEPSS rescore
  17. 2026-09-01 04:38 UTCEPSS rescore
  18. 2026-08-30 19:16 UTCEPSS rescore
  19. 2026-08-30 01:21 UTCEPSS rescore
  20. 2026-08-28 21:40 UTCEPSS rescore
  21. 2026-08-27 14:24 UTCEPSS rescore
  22. 2026-08-26 14:45 UTCEPSS rescore
  23. 2026-08-25 13:47 UTCEPSS rescore
  24. 2026-08-24 14:15 UTCEPSS rescore
  25. 2026-08-23 00:18 UTCEPSS rescore
Show 52 more
  1. 2026-08-21 23:48 UTCEPSS rescore
  2. 2026-08-20 22:54 UTCEPSS rescore
  3. 2026-08-19 17:02 UTCEPSS rescore
  4. 2026-08-18 13:47 UTCEPSS rescore
  5. 2026-08-17 13:46 UTCEPSS rescore
  6. 2026-08-16 14:55 UTCEPSS rescore
  7. 2026-08-16 12:25 UTCEG score recompute
  8. 2026-08-16 12:25 UTCGHSA enrichment
  9. 2026-08-16 02:13 UTCEPSS rescore
  10. 2026-08-16 02:13 UTCEPSS rescore
  11. 2026-08-15 01:29 UTCEPSS rescore
  12. 2026-08-14 20:48 UTCGHSA enrichment
  13. 2026-08-14 08:22 UTCEG score recompute
  14. 2026-08-14 08:22 UTCGHSA enrichment
  15. 2026-08-13 21:59 UTCEPSS rescore
  16. 2026-08-12 23:57 UTCEG score recompute
  17. 2026-08-12 23:57 UTCGHSA enrichment
  18. 2026-08-12 13:49 UTCEPSS rescore
  19. 2026-08-11 22:41 UTCEG score recompute
  20. 2026-08-11 22:40 UTCGHSA enrichment
  21. 2026-08-11 13:41 UTCEPSS rescore
  22. 2026-08-11 05:28 UTCEG score recompute
  23. 2026-08-11 05:28 UTCGHSA enrichment
  24. 2026-08-10 23:59 UTCEPSS rescore
  25. 2026-08-10 08:14 UTCGHSA enrichment
  26. 2026-08-09 20:07 UTCEG score recompute
  27. 2026-08-09 20:07 UTCGHSA enrichment
  28. 2026-08-09 13:45 UTCEPSS rescore
  29. 2026-08-09 08:00 UTCEG score recompute
  30. 2026-08-09 08:00 UTCGHSA enrichment
  31. 2026-08-08 07:46 UTCGHSA enrichment
  32. 2026-08-07 19:39 UTCEG score recompute
  33. 2026-08-07 19:39 UTCGHSA enrichment
  34. 2026-08-06 13:45 UTCEPSS rescore
  35. 2026-08-06 02:29 UTCEG score recompute
  36. 2026-08-06 02:29 UTCGHSA enrichment
  37. 2026-08-05 19:16 UTCEPSS rescore
  38. 2026-08-04 15:09 UTCEPSS rescore
  39. 2026-08-04 10:37 UTCEPSS rescore
  40. 2026-08-04 02:01 UTCEG score recompute
  41. 2026-08-04 02:01 UTCGHSA enrichment
  42. 2026-08-03 10:35 UTCEPSS rescore
  43. 2026-08-02 18:42 UTCEG score recompute
  44. 2026-08-02 18:42 UTCGHSA enrichment
  45. 2026-08-02 02:25 UTCEPSS rescore
  46. 2026-08-01 04:14 UTCEPSS rescore
  47. 2026-07-30 16:26 UTCEPSS rescore
  48. 2026-07-30 01:29 UTCEPSS rescore
  49. 2026-07-28 15:35 UTCEPSS rescore
  50. 2026-07-27 14:12 UTCEPSS rescore
  51. 2026-07-27 13:51 UTCEG score recompute
  52. 2026-07-27 13:51 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2025-13350?
CVE-2025-13350 is a high vulnerability published on March 5, 2026. Ubuntu Linux 6.8 GA retains the legacy AFUNIX garbage collector but backports upstream commit 8594d9b85c07 ("afunix: Don’t call skbget() for OOB skb"). When orphaned MSGOOB sockets hit unixgc(), the garbage collector still calls kfreeskb() as if OOB SKBs held two references; on Ubuntu Linux 6.8…
When was CVE-2025-13350 disclosed?
CVE-2025-13350 was first published in the National Vulnerability Database on March 5, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-13350 actively exploited?
CVE-2025-13350 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 95.7% of all scored CVEs.
What is the CVSS score of CVE-2025-13350?
CVE-2025-13350 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2025-13350?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-13350, 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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