CVE-2020-25220 Information

Description

The Linux kernel 4.9.x before 4.9.233 4.14.x before 4.14.194 and 4.19.x before 4.19.140 has a use-after-free because skcd-no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1868453 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233 https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html https://security.netapp.com/advisory/ntap-20201001-0004/ https://www.spinics.net/lists/stable/msg405099.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8