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Oracle Linux: CVE-2019-9213: ELSA-2019-1479: kernel security and bug fix update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2019-9213: ELSA-2019-1479: kernel security and bug fix update (IMPORTANT) (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
02/27/2019
Created
07/23/2020
Added
07/21/2020
Modified
01/07/2025

Description

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task. A flaw was found in mmap in the Linux kernel allowing the process to map a null page. This allows attackers to abuse this mechanism to turn null pointer dereferences into workable exploits.

Solution(s)

  • oracle-linux-upgrade-kernel
  • oracle-linux-upgrade-kernel-uek

References

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