CVE-2026-22997

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux9d71dd0c70099914fcd063135da3c580865e924c < a73e7d7e346dae1c22dc3e95b02ca464b12daf2caffected
LinuxLinux9d71dd0c70099914fcd063135da3c580865e924c < adabf01c19561e42899da9de56a6a1da0e6b8a5baffected
LinuxLinux9d71dd0c70099914fcd063135da3c580865e924c < b1d67607e97d489c0cfbbf55f48a76b00710b0e4affected
LinuxLinux9d71dd0c70099914fcd063135da3c580865e924c < 809a437e27a3bf3c1c6c8c157773635552116f2baffected
LinuxLinux9d71dd0c70099914fcd063135da3c580865e924c < cb2a610867bc379988bae0bb4b8bbc59c0decf1aaffected
LinuxLinux9d71dd0c70099914fcd063135da3c580865e924c < 6121b7564c725b632ffe4764abe85aa239d37703affected
LinuxLinux9d71dd0c70099914fcd063135da3c580865e924c < 1809c82aa073a11b7d335ae932d81ce51a588a4aaffected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.10.249 <= 5.10.*unaffected
LinuxLinux5.15.199 <= 5.15.*unaffected
LinuxLinux6.1.162 <= 6.1.*unaffected
LinuxLinux6.6.122 <= 6.6.*unaffected
LinuxLinux6.12.67 <= 6.12.*unaffected
LinuxLinux6.18.7 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References