CVE-2024-1086
Use-after-free in Linux kernel's netfilter: nf_tables component
- Published
- Updated
- Reserved
- Assigned by
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Linux Kernel Use-After-Free Vulnerability.
- Added
- 30 May 2024
- Fix due (US federal)
- 20 Jun 2024
- Used by ransomware
- Known
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By Google
- 1 day later
· 1 day later
Published
- 4 months later
· 4 months later
Added to CISA KEV
Known exploited, also by ransomware
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GoogleCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 28.1% · top 1.9% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
References (15)
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f342de4e2f33e0e39165d8639387aa6c19dff660 (opens in a new tab)patchx_transferred
- https://kernel.dance/f342de4e2f33e0e39165d8639387aa6c19dff660 (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/7LSPIOMIJYTLZB6QKPQVVAYSUETUWKPF/ (opens in a new tab)x_transferred
- https://github.com/Notselwyn/CVE-2024-1086 (opens in a new tab)x_transferred
- https://news.ycombinator.com/item?id=39828424 (opens in a new tab)x_transferred
- https://pwning.tech/nftables/ (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/04/15/2 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/04/10/23 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/04/10/22 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/04/14/1 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/04/17/5 (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20240614-0009/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html (opens in a new tab)x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1086 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-1086)Record last updated .