SB20260828134 - NULL pointer dereference in Linux kernel net
Published: August 28, 2026
Security Bulletin ID
SB20260828134
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-2026-80646)
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 __in6_dev_stats_get() when processing an skb for an l3 master device whose original physical device has been unregistered. A local user can trigger this condition to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0db1949084e85a72d174a7dea3259b94fe5a9305
- https://git.kernel.org/stable/c/1a4adfbeb47a212a64539137411f1ca168474d33
- https://git.kernel.org/stable/c/1e3db30a88815bae6e9d5db6f64ac735e615a07e
- https://git.kernel.org/stable/c/507541c2a8eeb76c02bd2511958f73a8cfa3e1bc
- https://git.kernel.org/stable/c/952426a83ca75cea25c09d58944abafaa3ebd242
- https://git.kernel.org/stable/c/a23f2c68c6635e41404f189f8f7ae910738cebdb
- https://git.kernel.org/stable/c/e14db43677946bf2095febd294bb3c13ab375ab7
- https://git.kernel.org/stable/c/fc920c0659cdea5afd8721c1155a51564859e075