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Oracle Linux: CVE-2018-20856: ELSA-2019-3055: kernel security and bug fix update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2018-20856: ELSA-2019-3055: kernel security and bug fix update (IMPORTANT) (Multiple Advisories)

Severity
6
CVSS
(AV:L/AC:H/Au:S/C:C/I:C/A:C)
Published
07/26/2019
Created
10/22/2019
Added
10/18/2019
Modified
11/29/2024

Description

An issue was discovered in the Linux kernel before 4.18.7. In block/blk-core.c, there is an __blk_drain_queue() use-after-free because a certain error case is mishandled. A flaw was found in the Linux kernel’s block driver implementation (blk_drain_queue() function) where a use-after-free condition could be triggered while draining the outstanding command queue in the systems block device subsystem. An attacker could use this flaw to crash the system or corrupt local memory, which may lead to privilege escalation.

Solution(s)

  • oracle-linux-upgrade-kernel-uek

References

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