A use-after-free flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality in the way a user connects with the protocol. This flaw allows a local user to crash the system.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2071051 | issue tracking third party advisory patch |
| https://www.openwall.com/lists/oss-security/2022/04/02/2 | mailing list patch exploit third party advisory |
| https://security-tracker.debian.org/tracker/CVE-2022-1204 | third party advisory |
| https://access.redhat.com/security/cve/CVE-2022-1204 | issue tracking third party advisory |