# CVE-2024-1086: Use-after-free in Linux kernel's netfilter: nf_tables component

> CVE-2024-1086: Use-after-free in Linux kernel's netfilter: nf_tables component. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2024-1086
Last updated: 2026-08-07T18:45:36Z

- Published: 2024-01-31 12:14 UTC · Updated: 2026-08-07 18:45 UTC · Assigner: Google
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 28.1%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2024-05-30, federal due date 2024-06-20, ransomware use: Known
- CWE: CWE-416

## 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.

## CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

## Affected vendors and products

- linux: linux\_kernel
- Linux: Kernel

## References

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

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2024-1086 · Markdown: https://rewindex.com/cve/CVE-2024-1086.md · JSON: https://rewindex.com/api/v1/cves/CVE-2024-1086 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:09:57.408Z