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Oracle Linux: CVE-2020-28974: ELSA-2021-9001: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2020-28974: ELSA-2021-9001: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:M/C:P/I:P/A:C)
Published
11/09/2020
Created
12/16/2020
Added
12/15/2020
Modified
12/17/2024

Description

A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height. An out-of-bounds (OOB) SLAB memory access flaw was found in the Linux kernel's fbcon driver module. A bounds check failure allows a local attacker with special user privileges to gain access to out-of-bounds memory, leading to a system crash or leaking of internal kernel information. The highest threat from this vulnerability is to system availability.

Solution(s)

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

References

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