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Oracle Linux: (CVE-2023-1829) ELSA-2023-4517: kernel security and bug fix update

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Oracle Linux: (CVE-2023-1829) ELSA-2023-4517: kernel security and bug fix update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/12/2023
Created
08/11/2023
Added
08/10/2023
Modified
08/10/2023

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.

Solution(s)

  • oracle-linux-upgrade-kernel

References

  • ELSA-2023-4517
  • CVE-2023-1829

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