can: j1939: transport: j1939_session_fresh_new(): initialize receive buffer

Summary

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]

Timeline

1. Aug 28, 2026, 6:53 AM UTCCVE published
2. Oct 16, 2026, 7:20 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: partial

3. Oct 16, 2026, 7:26 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in 348818277a3646d5b9fa60c9d20c00dc4bc86832; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in f3e120a34b336079479fa10f706f0636eaa6e751; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in bbfa49d1e287de44994955b44d19281be3195b44; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in 194d67e92197eb820f4c2c6605d9721333b3eba0; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in 038bad8e16c2e28acf31f0b527a816fb23a57269; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in 8604a3b81b9d0ceaf04fee5f52e701f623a179f9; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in d5b3613c7d69d8dcb4dd6704f1f463198ce9f6cf; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in eb96c58907922546e415e545fe9a14ea63b02719

• Linux Linux

  5.4

• KernelLinux

  From 5.4.0 · fixed in 5.10.265; From 5.11.0 · fixed in 5.15.216; From 5.16.0 · fixed in 6.1.183; From 6.2.0 · fixed in 6.6.151; From 6.7.0 · fixed in 6.12.103; From 6.13.0 · fixed in 6.18.44; From 6.19.0 · fixed in 7.1.8

References 8