PoC Index

CVE-2023-1829

HIGH 7.8EPSS 1.0%

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.

CVSS v3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.04% chance of exploitation in the next 30 days, 62th percentile
Published
2023-04-12
Updated
2026-07-29

Proof-of-concept exploits (2)

References

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