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CVE-2023-1829

nvd nist
Published: Apr 12, 2023Modified: Jul 29, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

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/ .

Affected (7)

Products: Linux: Linux Kernel
Linux
1 product
Linux Kernel
Configuration A
7 vulnerable
Vulnerable SoftwareAffected Versions
Linux
Linux Kernel
version < 4.14.308
Linux Kernel
4.15 ≤ version < 4.19.276
Linux Kernel
4.20 ≤ version < 5.4.235
Linux Kernel
5.11 ≤ version < 5.15.100
Linux Kernel
5.16 ≤ version < 6.1.18
Linux Kernel
5.5 ≤ version < 5.10.173
Linux Kernel
6.2 ≤ version < 6.2.5

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (10)

Source: cve-coordination@google.com
Mailing ListPatch
Source: cve-coordination@google.com
Patch
Source: cve-coordination@google.com
Mailing ListThird Party Advisory
Source: cve-coordination@google.com
Mailing ListThird Party Advisory
Source: cve-coordination@google.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.