Vulnerability CVE-2020-25220
Published: 2020-09-10

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.

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Linux -> Linux kernel 

 References:
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://www.spinics.net/lists/stable/msg405099.html
Copyright 2024, cxsecurity.com

 

Back to Top