UBUNTU-CVE-2023-4244
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
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03 / CONNECTIONS
Connected vulnerabilities
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. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e91b0ebd994635df2346353322ac51ce84ce6d8
- https://kernel.dance/3e91b0ebd994635df2346353322ac51ce84ce6d8
- https://ubuntu.com/security/CVE-2023-4244
- https://ubuntu.com/security/notices/USN-6443-1
- https://ubuntu.com/security/notices/USN-6444-1
- https://ubuntu.com/security/notices/USN-6444-2
- https://ubuntu.com/security/notices/USN-6445-1
- https://ubuntu.com/security/notices/USN-6445-2
- https://ubuntu.com/security/notices/USN-6446-1
- https://ubuntu.com/security/notices/USN-6446-2
- https://ubuntu.com/security/notices/USN-6446-3
- https://ubuntu.com/security/notices/USN-6461-1
- https://ubuntu.com/security/notices/USN-6466-1
- https://ubuntu.com/security/notices/USN-6503-1
- https://ubuntu.com/security/notices/USN-6537-1
- https://ubuntu.com/security/notices/USN-6572-1
- https://ubuntu.com/security/notices/USN-6681-1
- https://ubuntu.com/security/notices/USN-6681-2
- https://ubuntu.com/security/notices/USN-6681-3
- https://ubuntu.com/security/notices/USN-6681-4
- https://ubuntu.com/security/notices/USN-6716-1
- https://www.cve.org/CVERecord?id=CVE-2023-4244