CVE-2023-1829
A public proof of concept exists; no exploitation attested.
- Published2023-04-12
- Fixed in6.2.5 · 6.1.18 · 5.15.100 · 5.10.173 · 5.4.235 · 4.19.276
- WeaknessCWE-416
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ .
Timeline
dates in UTC- 2023-04-1212:15CVE publishedNVD
- 2026-10-2319:23First public proof of conceptPoC-in-GitHub
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-1829?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-1829?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 6.2 | ≥ 6.2, < 6.2.5 | 6.2.5 | NVD |
| 6.1 | ≥ 5.16, < 6.1.18 | 6.1.18 | NVD |
| 5.x | ≥ 5.11, < 5.15.100 | 5.15.100 | NVD |
| 5.x | ≥ 5.5, < 5.10.173 | 5.10.173 | NVD |
| 5.4 | ≥ 4.20, < 5.4.235 | 5.4.235 | NVD |
| 4.x | ≥ 4.15, < 4.19.276 | 4.19.276 | NVD |
| 4.14 | < 4.14.308 | 4.14.308 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- kernelAlmaLinux:8all versions · fixed in 4.18.0-477.21.1.el8_8and 23 other packages
- kernel-rtAlmaLinux:8all versions · fixed in 4.18.0-477.21.1.rt7.284.el8_8and 11 other packages
Fix
- Update Linux linux kernel to 6.2.5 · 6.1.18 · 5.15.100 · 5.10.173 · 5.4.235 · 4.19.276 · 4.14.308
Advisories and patches
- git.kernel.orgPatch
- kernel.dancePatch
Detection
read 2026-10-23 19:23 UTC- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
Sources
- CISA-ADPSSVC decisionnone2025-02-07
- OpenCVESSVC decisionnone—
- CNACVSS 3.17.8read 2026-10-23
- NVDCVSS 3.17.8read 2026-10-23
- CNAweakness (CWE)CWE-416read 2026-10-23
- NVDweakness (CWE)CWE-416read 2026-10-23
- FIRST EPSSEPSS score1.1 %2026-10-23
- PoC-in-GitHubproof of concept1read 2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- 2023-04-12
- Last Modified
- 2026-07-29
- NVD status
- Modified
Frequently asked questions
What is CVE-2023-1829?
Is CVE-2023-1829 actively exploited?
What is the CVSS score for CVE-2023-1829?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.