A flaw was found in the Linux kernel. This flaw allows an attacker to crash the Linux kernel by simulating amateur radio from the user space, resulting in a null-ptr-deref vulnerability and a use-after-free vulnerability.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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=2070694 | third party advisory issue tracking |
| https://www.openwall.com/lists/oss-security/2022/04/02/5 | third party advisory mailing list |
| https://github.com/torvalds/linux/commit/4e0f718daf97d47cf7dec122da1be970f145c809 | third party advisory patch |
| https://github.com/torvalds/linux/commit/71171ac8eb34ce7fe6b3267dce27c313ab3cb3ac | third party advisory patch |
| https://github.com/torvalds/linux/commit/7ec02f5ac8a5be5a3f20611731243dc5e1d9ba10 | third party advisory patch |
| https://access.redhat.com/security/cve/CVE-2022-1199 | third party advisory |
| https://security.netapp.com/advisory/ntap-20221228-0006/ | third party advisory |