CVE-2023-1829
Use-after-free in tcindex (traffic control index filter) in the Linux Kernel
HIGH 7.8EPSS 1.1%
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.
- Affected
- Linux · Linux Kernel
- CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.06% chance of exploitation in the next 30 days, 64th percentile
- Published
- 2023-04-12
- Updated
- 2026-07-29
Proof-of-concept exploits (2)
- lanleft/CVE-2023-182973★ · 2024-02-28
- lanleft/CVE2023-182973★ · 2024-02-28
Security advisories
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
- https://security.netapp.com/advisory/ntap-20230601-0001
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8c710f75256…
- https://kernel.dance/#8c710f75256bb3cf05ac7b1672c82b92c43f3d28