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.
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References
History
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MITRE
Status: PUBLISHED
Assigner: Google
Published: 2023-04-12T11:16:59.101Z
Updated: 2024-08-02T06:05:26.153Z
Reserved: 2023-04-04T10:32:43.055Z
Link: CVE-2023-1829
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-04-12T12:15:07.080
Modified: 2024-11-21T07:39:58.893
Link: CVE-2023-1829
Redhat