SB2026072769 - NULL pointer dereference in Linux kernel pci
Published: July 27, 2026
Security Bulletin ID
SB2026072769
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) NULL pointer dereference (CVE-ID: CVE-2026-64486)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 6.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in snd_cmipci_mixer_new in sound/pci/cmipci.c when handling control creation failures from snd_ctl_new1(). A local user can trigger a memory allocation failure and reach a NULL pointer dereference to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/4dd5b0b1a52a8d6e59a3f217204817228ce0238b
- https://git.kernel.org/stable/c/67e9ea92cd598cba1783ff701553c776a6cedee9
- https://git.kernel.org/stable/c/8825a06bfa7932a7a74dec01669d405df0b47286
- https://git.kernel.org/stable/c/af2b009b773bc42995546507963e5e78970dc3ed
- https://git.kernel.org/stable/c/b44888c33c4f11277d0e5e023338f2740232a4ed
- https://git.kernel.org/stable/c/c205bd1b28fb7e5f1061a4e78813fad7d315cb3e