5.5

CVE-2025-71182

can: j1939: make j1939_session_activate() fail if device is no longer registered

In the Linux kernel, the following vulnerability has been resolved:

can: j1939: make j1939_session_activate() fail if device is no longer registered

syzbot is still reporting

  unregister_netdevice: waiting for vcan0 to become free. Usage count = 2

even after commit 93a27b5891b8 ("can: j1939: add missing calls in
NETDEV_UNREGISTER notification handler") was added. A debug printk() patch
found that j1939_session_activate() can succeed even after
j1939_cancel_active_session() from j1939_netdev_notify(NETDEV_UNREGISTER)
has completed.

Since j1939_cancel_active_session() is processed with the session list lock
held, checking ndev->reg_state in j1939_session_activate() with the session
list lock held can reliably close the race window.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.4.1 < 5.10.248
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.198
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.161
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.121
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.66
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.6
Linux ≫ Linux Kernel Version5.4 Update-
Linux ≫ Linux Kernel Version6.19 Updaterc1
Linux ≫ Linux Kernel Version6.19 Updaterc2
Linux ≫ Linux Kernel Version6.19 Updaterc3
Linux ≫ Linux Kernel Version6.19 Updaterc4
Linux ≫ Linux Kernel Version6.19 Updaterc5
Linux ≫ Linux Kernel Version6.19 Updaterc6
Linux ≫ Linux Kernel Version6.19 Updaterc7
Linux ≫ Linux Kernel Version6.19 Updaterc8
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.051
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/ebb0dfd718dd31c8d3600612ca4b7207ec3d923a
Patch
https://git.kernel.org/stable/c/c3a4316e3c746af415c0fd6c6d489ad13f53714d
Patch
https://git.kernel.org/stable/c/46ca9dc978923c5e1247a9e9519240ba7ace413c
Patch
https://git.kernel.org/stable/c/78d87b72cebe2a993fd5b017e9f14fb6278f2eae
Patch
https://git.kernel.org/stable/c/ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536
Patch
https://git.kernel.org/stable/c/79dd3f1d9dd310c2af89b09c71f34d93973b200f
Patch
https://git.kernel.org/stable/c/5d5602236f5db19e8b337a2cd87a90ace5ea776d
Patch