CVE-2026-80707 PUBLISHED

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

Assigner: Linux
Reserved: 26.08.2026 Published: 28.08.2026 Updated: 28.08.2026

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]

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to 348818277a3646d5b9fa60c9d20c00dc4bc86832 (excl.)
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to f3e120a34b336079479fa10f706f0636eaa6e751 (excl.)
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to bbfa49d1e287de44994955b44d19281be3195b44 (excl.)
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to 194d67e92197eb820f4c2c6605d9721333b3eba0 (excl.)
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to 038bad8e16c2e28acf31f0b527a816fb23a57269 (excl.)
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to 8604a3b81b9d0ceaf04fee5f52e701f623a179f9 (excl.)
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to d5b3613c7d69d8dcb4dd6704f1f463198ce9f6cf (excl.)
  • affected from 9d71dd0c70099914fcd063135da3c580865e924c to eb96c58907922546e415e545fe9a14ea63b02719 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.4 is affected
  • unaffected from 0 to 5.4 (excl.)
  • unaffected from 5.10.265 to 5.10.* (incl.)
  • unaffected from 5.15.216 to 5.15.* (incl.)
  • unaffected from 6.1.183 to 6.1.* (incl.)
  • unaffected from 6.6.151 to 6.6.* (incl.)
  • unaffected from 6.12.103 to 6.12.* (incl.)
  • unaffected from 6.18.44 to 6.18.* (incl.)
  • unaffected from 7.1.8 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References