CVE-2025-13350

CVSS

No CVSS.

U

buntu 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.

References

Link	Resource
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2121515
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/noble/commit/?id=79cbc2a1d4f61e492ddac5da65b075836675f94d
http://www.openwall.com/lists/oss-security/2026/03/05/7

Configurations

No configuration.

History

05 Mar 2026, 21:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/03/05/7 -

05 Mar 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-05 20:16

Updated : 2026-03-05 21:16

NVD link : CVE-2025-13350

Mitre link : CVE-2025-13350

CVE.ORG link : CVE-2025-13350

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

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