A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write (COW) breakage of private read-only shared memory mappings. This flaw allows an unprivileged, local user to gain write access to read-only memory mappings, increasing their privileges on the system.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
| Link | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2022/08/08/1 | third party advisory mailing list |
| https://lore.kernel.org/linux-mm/20220808073232.8808-1-david%40redhat.com/ | vendor advisory |