Description
A memory leak problem was found in ctnetlink_create_conntrack in net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of service (DoS) attack due to a refcount overflow.
Affected products
linux: linux kernel; redhat: enterprise linux
References10
- bugzilla.redhat.com/show_bug.cgi?id=2256279 Issue TrackingPatch
- git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?… Mailing ListPatch
- bugzilla.redhat.com/show_bug.cgi?id=2256279 Issue TrackingPatch
- git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?… Mailing ListPatch
- access.redhat.com/errata/RHSA-2024:0723
- access.redhat.com/errata/RHSA-2024:0725
- access.redhat.com/errata/RHSA-2024:1188
- access.redhat.com/errata/RHSA-2024:1250
- access.redhat.com/errata/RHSA-2024:1306
- access.redhat.com/errata/RHSA-2024:1367
Metrics
- CVSS 3.1
-
4.4
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 23 · as of 5 November 2026
- CWE
- CWE-401
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.