fou: remove warn in gue_gro_receive on unsupported protocol
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.8%
exploitation probability
0.8%top 48% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
fou: remove warn in gue_gro_receive on unsupported protocol
Drop the WARN_ON_ONCE inn gue_gro_receive if the encapsulated type is
not known or does not have a GRO handler.
Such a packet is easily constructed. Syzbot generates them and sets
off this warning.
Remove the warning as it is expected and not actionable.
The warning was previously reduced from WARN_ON to WARN_ON_ONCE in
commit 270136613bf7 ("fou: Do WARN_ON_ONCE in gue_gro_receive for bad
proto callbacks").
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/3db4395332e7050ef9ddeb3052e6b5019f2a2a59https://git.kernel.org/stable/c/440ab7f97261bc28501636a13998e1b1946d2e79https://git.kernel.org/stable/c/5a2e37bc648a2503bf6d687aed27b9f4455d82ebhttps://git.kernel.org/stable/c/a925a200299a6dfc7c172f54da6f374edc930053https://git.kernel.org/stable/c/b1453a5616c7bd8acd90633ceba4e59105ba3b51https://git.kernel.org/stable/c/dd89a81d850fa9a65f67b4527c0e420d15bf836chttps://lists.debian.org/debian-lts-announce/2025/01/msg00001.htmlhttps://lists.debian.org/debian-lts-announce/2025/03/msg00002.html