{"id":"CVE-2026-22997","title":"net: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts\n\nSince j1939_session_deactivate_activate_next() in j1939_tp_rxtimer…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < a73e7d7e346dae1c22dc3e95b02ca464b12daf2c","Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < adabf01c19561e42899da9de56a6a1da0e6b8a5b","Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < b1d67607e97d489c0cfbbf55f48a76b00710b0e4","Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < 809a437e27a3bf3c1c6c8c157773635552116f2b","Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < cb2a610867bc379988bae0bb4b8bbc59c0decf1a","Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < 6121b7564c725b632ffe4764abe85aa239d37703","Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < 1809c82aa073a11b7d335ae932d81ce51a588a4a","Linux 5.4"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-16T20:36:25.922251Z"},"published":"2026-01-25","updated":"2026-10-19","sourceUpdated":"2026-10-19T18:25:26.725Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-22997","references":[{"url":"https://git.kernel.org/stable/c/a73e7d7e346dae1c22dc3e95b02ca464b12daf2c"},{"url":"https://git.kernel.org/stable/c/adabf01c19561e42899da9de56a6a1da0e6b8a5b"},{"url":"https://git.kernel.org/stable/c/b1d67607e97d489c0cfbbf55f48a76b00710b0e4"},{"url":"https://git.kernel.org/stable/c/809a437e27a3bf3c1c6c8c157773635552116f2b"},{"url":"https://git.kernel.org/stable/c/cb2a610867bc379988bae0bb4b8bbc59c0decf1a"},{"url":"https://git.kernel.org/stable/c/6121b7564c725b632ffe4764abe85aa239d37703"},{"url":"https://git.kernel.org/stable/c/1809c82aa073a11b7d335ae932d81ce51a588a4a"}],"tags":["cve.org"],"epss":0.00472,"epssPercentile":0.39476,"ingestedAt":"2026-10-19T18:35:50.121Z","slug":"CVE-2026-22997","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: can: j1939: j1939_xtp_rx_rts_session_active(): deactivate session upon receiving the second rts\n\nSince j1939_session_deactivate_activate_next() in j1939_tp_rxtimer() is\ncalled only when the timer is enabled, we need to call\nj1939_session_deactivate_activate_next() if we cancelled the timer.\nOtherwise, refcount for j1939_session leaks, which will later appear as\n\n| unregister_netdevice: waiting for vcan0 to become free. Usage count = 2.\n\nproblem.\n\n## Affected\n\n- `Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < a73e7d7e346dae1c22dc3e95b02ca464b12daf2c`\n- `Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < adabf01c19561e42899da9de56a6a1da0e6b8a5b`\n- `Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < b1d67607e97d489c0cfbbf55f48a76b00710b0e4`\n- `Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < 809a437e27a3bf3c1c6c8c157773635552116f2b`\n- `Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < cb2a610867bc379988bae0bb4b8bbc59c0decf1a`\n- `Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < 6121b7564c725b632ffe4764abe85aa239d37703`\n- `Linux >= 9d71dd0c70099914fcd063135da3c580865e924c < 1809c82aa073a11b7d335ae932d81ce51a588a4a`\n- `Linux 5.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}