UBUNTU-CVE-2023-4015
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
18 explicit affected versions
26 explicit affected versions
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35 explicit affected versions
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2 explicit affected versions
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13 explicit affected versions
29 explicit affected versions
10 explicit affected versions
26 explicit affected versions
13 explicit affected versions
15 explicit affected versions
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2 explicit affected versions
13 explicit affected versions
7 explicit affected versions
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10 explicit affected versions
6 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
18 explicit affected versions
37 explicit affected versions
38 explicit affected versions
22 explicit affected versions
9 explicit affected versions
22 explicit affected versions
11 explicit affected versions
29 explicit affected versions
7 explicit affected versions
3 explicit affected versions
4 explicit affected versions
1 explicit affected versions
27 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
5 explicit affected versions
4 explicit affected versions
1 explicit affected versions
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. 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/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a771f7b266b02d262900c75f1e175c7fe76fec2
- https://google.github.io/security-research/kernelctf/rules
- https://patchwork.ozlabs.org/project/netfilter-devel/patch/[email protected]/
- https://ubuntu.com/security/CVE-2023-4015
- https://ubuntu.com/security/notices/USN-6315-1
- https://ubuntu.com/security/notices/USN-6316-1
- https://ubuntu.com/security/notices/USN-6318-1
- https://ubuntu.com/security/notices/USN-6321-1
- https://ubuntu.com/security/notices/USN-6325-1
- https://ubuntu.com/security/notices/USN-6328-1
- https://ubuntu.com/security/notices/USN-6330-1
- https://ubuntu.com/security/notices/USN-6332-1
- https://ubuntu.com/security/notices/USN-6348-1
- https://ubuntu.com/security/notices/USN-6385-1
- https://www.cve.org/CVERecord?id=CVE-2023-4015