SB20260912176 - Missing Release of Resource after Effective Lifetime in Linux kernel ecryptfs

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-89605)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to failure to release a message context in ecryptfs messaging when sending a message to the userspace daemon fails. A local user can trigger message delivery failures to exhaust reusable message contexts.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/219644a3ad5518217b2d62cad6d2c36a2308c949
• https://git.kernel.org/stable/c/47ce611cb13f0eefa550d5434c1afcd4217bfc3e
• https://git.kernel.org/stable/c/654b7e79443f5ea90849f5c1cf70c0d94bd5b10e
• https://git.kernel.org/stable/c/9319706316a8e79f374627554386d575a84b637f