Description
In the Linux kernel, the following vulnerability has been resolved: can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer Zero the allocated buffer in j1939_session_fresh_new() to ensure it contains no residual data. While there is a potential performance impact if users allocate maximum sized ETP buffers, most real-world use cases are not noticeably affected since the maximum known buffer size is typically around 65K. [mkl: add Message-ID]
References8
- git.kernel.org/stable/c/038bad8e16c2e28acf31f0b527a816fb23a57269
- git.kernel.org/stable/c/194d67e92197eb820f4c2c6605d9721333b3eba0
- git.kernel.org/stable/c/348818277a3646d5b9fa60c9d20c00dc4bc86832
- git.kernel.org/stable/c/8604a3b81b9d0ceaf04fee5f52e701f623a179f9
- git.kernel.org/stable/c/bbfa49d1e287de44994955b44d19281be3195b44
- git.kernel.org/stable/c/d5b3613c7d69d8dcb4dd6704f1f463198ce9f6cf
- git.kernel.org/stable/c/eb96c58907922546e415e545fe9a14ea63b02719
- git.kernel.org/stable/c/f3e120a34b336079479fa10f706f0636eaa6e751
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 26 · as of 8 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.