CVE-2024-1086

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CVE-2024-1086

Summary: Use-after-free in Linux kernel's netfilter: nf_tables component

Details: A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.

References: http://www.openwall.com/lists/oss-security/2024/04/10/22, http://www.openwall.com/lists/oss-security/2024/04/10/23, http://www.openwall.com/lists/oss-security/2024/04/14/1, http://www.openwall.com/lists/oss-security/2024/04/15/2, http://www.openwall.com/lists/oss-security/2024/04/17/5, https://git.kernel.org, https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660, https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html, https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html, https://lists.fedoraproject.org/archives/list/[email protected]/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/, https://news.ycombinator.com/item?id=39828424, https://pwning.tech/nftables/, https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1086, https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/1xxx/CVE-2024-1086.json, https://nvd.nist.gov/vuln/detail/CVE-2024-1086, https://security.netapp.com/advisory/ntap-20240614-0009/, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660, https://github.com/Notselwyn/CVE-2024-1086