CVE-2022-0847
Published Mar 10, 2022
·
Last updated 4 months ago
Description
A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.
Risk scores
CVSS 3.1
- Primary
- 7.8
- 5.9
- 1.8
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- HIGH
CVSS 2.0
- Primary
- 7.2
- 10
- 3.9
- AV:L/AC:L/Au:N/C:C/I:C/A:C
Known exploits
Data from CISA
Linux Kernel Privilege Escalation Vulnerability
Apr 25, 2022
May 16, 2022
Apply updates per vendor instructions.
Source
secalert@redhat.com
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