CVE-2024-1086

Summary

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.

Affected Software

Weaknesses

• CWE-416: CWE-416 Use After Free

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: active
  • Automatable: no
  • Technical Impact: total

Additional References

• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1086

CVE Program Container

Additional References

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660
• https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/
• https://github.com/Notselwyn/CVE-2024-1086
• https://news.ycombinator.com/item?id=39828424
• https://pwning.tech/nftables/
• http://www.openwall.com/lists/oss-security/2024/04/15/2
• http://www.openwall.com/lists/oss-security/2024/04/10/23
• http://www.openwall.com/lists/oss-security/2024/04/10/22
• http://www.openwall.com/lists/oss-security/2024/04/14/1
• http://www.openwall.com/lists/oss-security/2024/04/17/5
• https://security.netapp.com/advisory/ntap-20240614-0009/
• https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
• https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

References

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660
• https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/
• https://github.com/Notselwyn/CVE-2024-1086
• https://news.ycombinator.com/item?id=39828424
• https://pwning.tech/nftables/
• http://www.openwall.com/lists/oss-security/2024/04/15/2
• http://www.openwall.com/lists/oss-security/2024/04/10/23
• http://www.openwall.com/lists/oss-security/2024/04/10/22
• http://www.openwall.com/lists/oss-security/2024/04/14/1
• http://www.openwall.com/lists/oss-security/2024/04/17/5
• https://security.netapp.com/advisory/ntap-20240614-0009/
• https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
• https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

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