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Oracle Linux: CVE-2023-1095: ELSA-2023-12232: Unbreakable Enterprise kernel security update (IMPORTANT)

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Oracle Linux: CVE-2023-1095: ELSA-2023-12232: Unbreakable Enterprise kernel security update (IMPORTANT)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
08/09/2022
Created
05/05/2023
Added
04/05/2023
Modified
07/22/2024

Description

In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list -- the list head is all zeroes, this results in a NULL pointer dereference. A NULL pointer dereference flaw was found in the Linux kernel’s netfilter subsystem. The issue could occur due to an error in nf_tables_updtable while freeing a transaction object not placed on the list head. This flaw allows a local, unprivileged user to crash the system, resulting in a denial of service.

Solution(s)

  • oracle-linux-upgrade-kernel-uek

References

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