High severity7.8NVD Advisory· Published Sep 6, 2023· Updated Jun 17, 2026

CVE-2023-4015

Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

On an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used.

We recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Debian/linux
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
Linux/Kernel3 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.9,<5.10.190
- (no CPE)
- (no CPE)range: 6.4

Patches

Vulnerability mechanics

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdIssue TrackingMailing ListPatchVendor Advisory
kernel.dance/0a771f7b266b02d262900c75f1e175c7fe76fec2nvdPatchVendor Advisory
www.debian.org/security/2023/dsa-5492nvdThird Party Advisory

News mentions

No linked articles in our index yet.

cvss	0.507
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000