CVE-2023-1281UAF in Linux kernel's tcindex (traffic control index filter) implementation
- 7.8HighCVSS base score
- 0.30%Exploitation in 30 daysEPSS · top 76% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.
Timeline
ID reserved
By Google
- 14 days later
· 14 days later
Published
- 3 years later
· 3 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 · Modified | 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)
- 0.30% · top 76% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · 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
- affected 4.14.0 – < 5.10.169
- affected 5.11.0 – < 5.15.95
- affected 5.16.0 – < 6.1.13
- unaffected 6.2.0
- unaffected ee059170b1f7e94e55fa6cadee544e176a6e59c2
References
References6
- https://kernel.dance/#ee059170b1f7e94e55fa6cadee544e176a6e59c2 (opens in a new tab)x_transferred
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee059170b1f7e94e55fa6cadee544e176a6e59c2 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/04/11/3 (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20230427-0004/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html (opens in a new tab)x_transferred
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)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-23548 (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-2023-1281)Record last updated .