SB2026082856 - Improper Initialization in Linux kernel can j1939
Published: August 28, 2026
Security Bulletin ID
SB2026082856
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Initialization (CVE-ID: CVE-2026-80707)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper initialization in j1939_session_fresh_new() in the can j1939 transport component when allocating a receive buffer. A local user can trigger allocation of a buffer containing residual data to disclose sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/038bad8e16c2e28acf31f0b527a816fb23a57269
- https://git.kernel.org/stable/c/194d67e92197eb820f4c2c6605d9721333b3eba0
- https://git.kernel.org/stable/c/348818277a3646d5b9fa60c9d20c00dc4bc86832
- https://git.kernel.org/stable/c/8604a3b81b9d0ceaf04fee5f52e701f623a179f9
- https://git.kernel.org/stable/c/bbfa49d1e287de44994955b44d19281be3195b44
- https://git.kernel.org/stable/c/d5b3613c7d69d8dcb4dd6704f1f463198ce9f6cf
- https://git.kernel.org/stable/c/eb96c58907922546e415e545fe9a14ea63b02719
- https://git.kernel.org/stable/c/f3e120a34b336079479fa10f706f0636eaa6e751