SB20260507228 - NULL pointer dereference in Linux kernel misc bcm-vk driver
Published: May 7, 2026
Security Bulletin ID
SB20260507228
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-2025-71291)
CWE-ID: CWE-476 - NULL Pointer Dereference
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 a null-pointer dereference in bcm_vk_read() when handling message data. A local user can trigger a code path where a potentially NULL entry pointer is dereferenced to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/20f2d9dbe5e972516f8f9948d7ae5b95d1ad77bd
- https://git.kernel.org/stable/c/3842f93e6e29d5cc1dcb9e5bda70587b444bed69
- https://git.kernel.org/stable/c/741c5a3a0cd893a4218fc0fc8c18403e54fcfb22
- https://git.kernel.org/stable/c/aa97ccc3dc1eba9f4537f0410e9dbb0b05ccf2fb
- https://git.kernel.org/stable/c/ba75ecb97d3f4e95d59002c13afb6519205be6cb
- https://git.kernel.org/stable/c/ece3722169ba93734bfd1f06255e8ab7f19fe964