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CVE-2026-22997

net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.249, 5.15.199, 6.1.162, 6.6.122, 6.12.67, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts Since j1939_session_deactivate_activate_next() in j1939_tp_rxtimer() is called only when the timer is enabled, we need to call j1939_session_deactivate_activate_next() if we cancelled the timer. Otherwise, refcount for j1939_session leaks, which will later appear as | unregister_netdevice: waiting for vcan0 to become free. Usage count = 2. problem.

Timeline

  1. CVE published
  2. CISA SSVC assessment

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

  3. Record last updated

Affected versions

  • Linux Linux

    From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in a73e7d7e346dae1c22dc3e95b02ca464b12daf2c; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in adabf01c19561e42899da9de56a6a1da0e6b8a5b; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in b1d67607e97d489c0cfbbf55f48a76b00710b0e4; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in 809a437e27a3bf3c1c6c8c157773635552116f2b; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in cb2a610867bc379988bae0bb4b8bbc59c0decf1a; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in 6121b7564c725b632ffe4764abe85aa239d37703; From 9d71dd0c70099914fcd063135da3c580865e924c · fixed in 1809c82aa073a11b7d335ae932d81ce51a588a4a

  • Linux Linux

    5.4

  • KernelLinux

    From 5.4.0 · fixed in 5.10.249; From 5.11.0 · fixed in 5.15.199; From 5.16.0 · fixed in 6.1.162; From 6.2.0 · fixed in 6.6.122; From 6.7.0 · fixed in 6.12.67; From 6.13.0 · fixed in 6.18.7

References 7

git.kernel.org