Description
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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= f106694733c66a48740c25bc4e212e9b2ea364ce, < 2c7c71113ed6d3e2f3aca4c088f22283016ff34f; >= be69850b461e7b491d87a22e33ab76fdd04b725e, < c4cde57c8affdcca5bcff53a1047e15d268bdca1; >= d265929930e2ffafc744c0ae05fb70acd53be1ee, < 9f45588993d7f115280fc726119ca86fba32a811; >= d265929930e2ffafc744c0ae05fb70acd53be1ee, < 3cd717359e56f82f06cbf8279b47a7d79880c6f3; >= d265929930e2ffafc744c0ae05fb70acd53be1ee, < 26a82dce2beee39c43c109d9647e16f49cb02a35; >= d265929930e2ffafc744c0ae05fb70acd53be1ee, < 8bdafdf4900040a81422056cabe5e00a37bd101a; >= d265929930e2ffafc744c0ae05fb70acd53be1ee, < 7811ba452402d58628e68faedf38745b3d485e3c |
| Linux | Linux | 5.19 |
References
- https://git.kernel.org/stable/c/26a82dce2beee39c43c109d9647e16f49cb02a35Patch
- https://git.kernel.org/stable/c/2c7c71113ed6d3e2f3aca4c088f22283016ff34fPatch
- https://git.kernel.org/stable/c/3cd717359e56f82f06cbf8279b47a7d79880c6f3Patch
- https://git.kernel.org/stable/c/7811ba452402d58628e68faedf38745b3d485e3cPatch
- https://git.kernel.org/stable/c/8bdafdf4900040a81422056cabe5e00a37bd101aPatch
- https://git.kernel.org/stable/c/9f45588993d7f115280fc726119ca86fba32a811Patch
- https://git.kernel.org/stable/c/c4cde57c8affdcca5bcff53a1047e15d268bdca1Patch
Timeline
- Published
- Feb 14, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Modified