CVE-2022-1882

A use-after-free flaw was found in the Linux kernel’s pipes functionality in how a user performs manipulations with the pipe post_one_notification() after free_pipe_info() that is already called. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Potential Mitigations

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2089701
• https://lore.kernel.org/lkml/20220507115605.96775-1-tcs.kernel%40gmail.com/T/
• https://security.netapp.com/advisory/ntap-20220715-0002/
• https://bugzilla.redhat.com/show_bug.cgi?id=2089701
• https://lore.kernel.org/lkml/20220507115605.96775-1-tcs.kernel%40gmail.com/T/
• https://security.netapp.com/advisory/ntap-20220715-0002/