SB20260626156 - Use-after-free in Linux kernel core
Published: June 26, 2026
Security Bulletin ID
SB20260626156
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-53192)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in snd_timer_user_params() when handling a concurrent SNDRV_TIMER_IOCTL_PARAMS ioctl during timer object release. A local user can trigger concurrent timer operations to cause a denial of service.
The issue affects userspace timer handling with CONFIG_SND_UTIMER enabled.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/053a401b592be424fea9d57c789f66cd5d8cec11
- https://git.kernel.org/stable/c/117743d62e1225e208568a3ffc2c07214f1347cb
- https://git.kernel.org/stable/c/306427adf9b97e29e5958cb9cf3096c6151fc9ff
- https://git.kernel.org/stable/c/38034d04d4a75bbca01df2b313ced0bcd0fa3242
- https://git.kernel.org/stable/c/3d39da65b5c422c5e5afb7d5651b0698d060a827
- https://git.kernel.org/stable/c/92ad2d7f80cad43b046f093e808e11fe919d304a
- https://git.kernel.org/stable/c/b2214914e461d0466548a52dfe4f4ee8ce362276
- https://git.kernel.org/stable/c/e2331730175f74169046d2af8db1b47243df7c7a