CVE-2026-23139
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…
Does this matter?
Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.