CVE-2026-22997
Full vulnerability record from the local CVENow database.
Description
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.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-01-25 15:15:54.540000
Last modified
2026-10-19 19:17:31.163000
View original CVE JSON
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-01-25T15:15:54.540",
"lastModified": "2026-10-19T19:17:31.163",
"vulnStatus": "Modified",
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"lang": "en",
"value": "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() 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."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: can: j1939: j1939_xtp_rx_rts_session_active(): desactivar sesión al recibir el segundo rts\n\nDado que j1939_session_deactivate_activate_next() en j1939_tp_rxtimer() se\nllama solo cuando el temporizador está habilitado, necesitamos llamar a\nj1939_session_deactivate_activate_next() si cancelamos el temporizador.\nDe lo contrario, la cuenta de referencias (refcount) para j1939_session se fuga, lo que más tarde aparecerá como\n\n| unregister_netdevice: esperando que vcan0 quede libre. Recuento de uso = 2.\n\nproblema."
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