CVE-2023-1829

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/ .

Weakness classification

• cve-coordination@google.com: CWE-416
• nvd@nist.gov: CWE-416

Primary references

• cve-coordination@google.com — Mailing List, Patch
• cve-coordination@google.com — Patch
• cve-coordination@google.com — Mailing List, Third Party Advisory
• cve-coordination@google.com — Mailing List, Third Party Advisory
• cve-coordination@google.com — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Patch
• af854a3a-2127-422b-91ae-364da2661108 — Patch
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory