An out of memory bounds write flaw (1 or 2 bytes of memory) in the Linux kernel NFS subsystem was found in the way users use mirroring (replication of files with NFS). A user, having access to the NFS mount, could potentially use this flaw to crash the system or escalate privileges on the system.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2034342 | issue tracking third party advisory |
| https://lore.kernel.org/lkml/20210517140244.822185482%40linuxfoundation.org/ | |
| https://www.oracle.com/security-alerts/cpujul2022.html | third party advisory |
| https://security.netapp.com/advisory/ntap-20220602-0007/ | third party advisory |