CVE-2022-0847

Open Source Vulnerabilities ASB-A-220741611

In multiple functions of iov_iter.c, there is a possible out of bounds write due to uninitialized data. This could lead to local escalation of privilege in system libraries with no additional execution privileges needed. User interaction is not needed for exploitation.

Cybersecurity and Infrastructure Security Agency Known Exploited Vulnerabilities CVE-2022-0847

Linux kernel contains an improper initialization vulnerability where an unprivileged local user could escalate their privileges on the system. This vulnerability has the moniker of "Dirty Pipe."

Open Source Vulnerabilities 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.