Use-after-free in Linux kernel's netfilter: nf_tables component
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.
02 / AFFECTED SOFTWARE
Affected packages
8 explicit affected versions
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a771f7b266b02d262900c75f1e175c7fe76fec2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4015.json
- https://kernel.dance/0a771f7b266b02d262900c75f1e175c7fe76fec2
- https://nvd.nist.gov/vuln/detail/CVE-2023-4015
- https://www.debian.org/security/2023/dsa-5492