netfilter: nft_compat: ebtables emulation must reject non-bridge targets
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.3epss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_compat: ebtables emulation must reject non-bridge targets
xtables targets return netfilter verdicts: NF_ACCEPT, NF_DROP, and so
on. ebtables targets return incompatible verdicts: EBT_ACCEPT,
EBT_DROP, ... We cannot allow fallback to NFPROTO_UNSPEC.
ebtables doesn't permit this since
11ff7288beb2 ("netfilter: ebtables: reject non-bridge targets")
but that commit missed the nft_compat layer.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/33e1875d6b5b552a2e5652b40074c604199354eehttps://git.kernel.org/stable/c/9dbba7e694ec045f21ede2f892fb42b81b4e1692https://git.kernel.org/stable/c/b3f7a84540a0d014ec42343ff5909657c1bd1994https://git.kernel.org/stable/c/c129b0185e707dce405968e21afccd5728b2ce63https://git.kernel.org/stable/c/efc17b9240d821c424bc5191a5c6e9384a06293e