CVE-2023-3777
Use-after-free in Linux kernel's netfilter: nf_tables component
HIGH 7.8EPSS 0.4%
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
- Affected
- Linux · Kernel
- CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.41% chance of exploitation in the next 30 days, 34th percentile
- Published
- 2023-09-06
- Updated
- 2026-10-14
Exploit collections (1)
- linux/kernelctf/CVE-2023-3777_ltsgoogle/security-research
Security advisories
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6eaf41e87a2…
- https://kernel.dance/6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8
- http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1…
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1…
- https://www.debian.org/security/2023/dsa-5492