Description

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
Linux	Kernel	>= 3.15, < 6.8
linux	linux_kernel	>= 3.15, < 6.8

References

http://www.openwall.com/lists/oss-security/2024/04/10/22Mailing List, Patch
http://www.openwall.com/lists/oss-security/2024/04/10/23Mailing List, Patch
http://www.openwall.com/lists/oss-security/2024/04/14/1Exploit, Mailing List
http://www.openwall.com/lists/oss-security/2024/04/15/2Mailing List
http://www.openwall.com/lists/oss-security/2024/04/17/5Exploit, Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660Patch
https://github.com/Notselwyn/CVE-2024-1086Exploit, Third Party Advisory
https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660Patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/Mailing List
https://news.ycombinator.com/item?id=39828424Issue Tracking
https://pwning.tech/nftables/Exploit, Technical Description, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240614-0009/Third Party Advisory
http://www.openwall.com/lists/oss-security/2024/04/10/22Mailing List, Patch
http://www.openwall.com/lists/oss-security/2024/04/10/23Mailing List, Patch
http://www.openwall.com/lists/oss-security/2024/04/14/1Exploit, Mailing List
http://www.openwall.com/lists/oss-security/2024/04/15/2Mailing List
http://www.openwall.com/lists/oss-security/2024/04/17/5Exploit, Mailing List
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660Patch
https://github.com/Notselwyn/CVE-2024-1086Exploit, Third Party Advisory
https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660Patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00016.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/Mailing List
https://news.ycombinator.com/item?id=39828424Issue Tracking
https://pwning.tech/nftables/Exploit, Technical Description, Third Party Advisory
https://security.netapp.com/advisory/ntap-20240614-0009/Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1086US Government Resource

Timeline

Published: Jan 31, 2024
Last modified: Aug 7, 2026
Added to CISA KEV: May 30, 2024
NVD status: Analyzed