A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel’s filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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=2070205 | issue tracking third party advisory |
| https://access.redhat.com/security/cve/CVE-2022-1184 | third party advisory |
| https://ubuntu.com/security/CVE-2022-1184 | third party advisory patch |
| https://www.debian.org/security/2022/dsa-5257 | third party advisory vendor advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html | third party advisory mailing list |