netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets
Userspace provides an optimized representation in case intervals are
adjacent, where the end element is omitted.
The existing partial overlap detection logic skips anonymous set checks
on start elements for this reason.
However, it is possible to add intervals that overlap to this anonymous
where two start elements with the same, eg. A-B, A-C where C < B.
start end
A B
start end
A C
Restore the check on overlapping start elements to report an overlap.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280fhttps://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffchttps://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427dfhttps://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1