CVE-2024-1086Use-after-free in Linux kernel's netfilter: nf_tables component
- 7.8HighCVSS base score
- 28.1%Exploitation in 30 daysEPSS · top 1.9% of all CVEs
- YesKnown exploitedin CISA's KEV since 30 May 2024
- YesPublic exploitsa reference or SSVC says so
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.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 30 May 2024.
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 (14 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.
Affected products
References
References15
- 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)
- EUVD EUVD-2024-16861 (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://cveledger.app/cve/CVE-2024-1086)Record last updated .