cbcvebase.
CVE-2026-23139
published 2026-02-14

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…

PriorityP422medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.33%
25.3th percentile
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.

Affected

47 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.162-1 (bookworm)linux 6.1.162-1 (bookworm)
linuxlinux
linuxlinux>= be69850b461e7b491d87a22e33ab76fdd04b725e < c4cde57c8affdcca5bcff53a1047e15d268bdca1c4cde57c8affdcca5bcff53a1047e15d268bdca1
linuxlinux>= d265929930e2ffafc744c0ae05fb70acd53be1ee < 9f45588993d7f115280fc726119ca86fba32a8119f45588993d7f115280fc726119ca86fba32a811
linuxlinux>= d265929930e2ffafc744c0ae05fb70acd53be1ee < 3cd717359e56f82f06cbf8279b47a7d79880c6f33cd717359e56f82f06cbf8279b47a7d79880c6f3
linuxlinux>= d265929930e2ffafc744c0ae05fb70acd53be1ee < 26a82dce2beee39c43c109d9647e16f49cb02a3526a82dce2beee39c43c109d9647e16f49cb02a35
linuxlinux>= d265929930e2ffafc744c0ae05fb70acd53be1ee < 8bdafdf4900040a81422056cabe5e00a37bd101a8bdafdf4900040a81422056cabe5e00a37bd101a
linuxlinux>= d265929930e2ffafc744c0ae05fb70acd53be1ee < 7811ba452402d58628e68faedf38745b3d485e3c7811ba452402d58628e68faedf38745b3d485e3c
linuxlinux>= f106694733c66a48740c25bc4e212e9b2ea364ce < 2c7c71113ed6d3e2f3aca4c088f22283016ff34f2c7c71113ed6d3e2f3aca4c088f22283016ff34f
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.1.162-16.1.162-1
linuxlinux_kernel>= 0 < 6.12.69-16.12.69-1
linuxlinux_kernel>= 0 < 6.18.8-16.18.8-1
linuxlinux_kernel>= 5.19 < 6.1.1616.1.161
linuxlinux_kernel>= 6.13 < 6.18.66.18.6
linuxlinux_kernel>= 6.2 < 6.6.1216.6.121
linuxlinux_kernel>= 6.7 < 6.12.666.12.66
ubuntulinux
ubuntulinux-aws
ubuntulinux-aws-fips
ubuntulinux-azure
ubuntulinux-azure-6.17
ubuntulinux-azure-6.8
ubuntulinux-azure-fde-6.17
ubuntulinux-azure-fips

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_ubuntu7.8HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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