netfilter: nf_conncount: update last_gc only when GC has been performed
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
exploitation probability
0.3%top 75% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conncount: update last_gc only when GC has been performed
Currently last_gc is being updated everytime a new connection is
tracked, that means that it is updated even if a GC wasn't performed.
With a sufficiently high packet rate, it is possible to always bypass
the GC, causing the list to grow infinitely.
Update the last_gc value only when a GC has been actually performed.
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/26a82dce2beee39c43c109d9647e16f49cb02a35https://git.kernel.org/stable/c/2c7c71113ed6d3e2f3aca4c088f22283016ff34fhttps://git.kernel.org/stable/c/3cd717359e56f82f06cbf8279b47a7d79880c6f3https://git.kernel.org/stable/c/7811ba452402d58628e68faedf38745b3d485e3chttps://git.kernel.org/stable/c/8bdafdf4900040a81422056cabe5e00a37bd101ahttps://git.kernel.org/stable/c/9f45588993d7f115280fc726119ca86fba32a811https://git.kernel.org/stable/c/c4cde57c8affdcca5bcff53a1047e15d268bdca1