can: hi311x: hi3110_can_ist(): fix potential use-after-free
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
can: hi311x: hi3110_can_ist(): fix potential use-after-free
The commit a22bd630cfff ("can: hi311x: do not report txerr and rxerr
during bus-off") removed the reporting of rxerr and txerr even in case
of correct operation (i. e. not bus-off).
The error count information added to the CAN frame after netif_rx() is
a potential use after free, since there is no guarantee that the skb
is in the same state. It might be freed or reused.
Fix the issue by postponing the netif_rx() call in case of txerr and
rxerr reporting.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1128022009444faf49359bd406cd665b177cb643https://git.kernel.org/stable/c/4ad77eb8f2e07bcfa0e28887d3c7dbb732d92cc1https://git.kernel.org/stable/c/9ad86d377ef4a19c75a9c639964879a5b25a433bhttps://git.kernel.org/stable/c/bc30b2fe8c54694f8ae08a5b8a5d174d16d93075https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html