CVE-2022-0847

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.

Score
CVSS 3.1 7.8 High
Status
Analyzed - secalert@redhat.com
Published
2022-03-10
Last modified
2025-10-21
Known exploited (CISA KEV)
since 2022-04-25, action due 2022-05-16: Apply updates per vendor instructions.
Weaknesses
CWE-665

Affected products

References

 
 
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