A vulnerability exists in the memory management subsystem of the Linux kernel. The lock handling for accessing and updating virtual memory areas (VMAs) is incorrect, leading to use-after-free problems. This issue can be successfully exploited to execute arbitrary kernel code, escalate containers, and gain root privileges.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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://access.redhat.com/security/cve/CVE-2023-3269 | third party advisory vdb entry |
| https://bugzilla.redhat.com/show_bug.cgi?id=2215268 | patch third party advisory issue tracking |
| https://www.openwall.com/lists/oss-security/2023/07/05/1 | mailing list |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U6AAA64CUPSMBW6XDTXPQJ3KQWYQ4K7L/ | third party advisory mailing list |
| http://seclists.org/fulldisclosure/2023/Jul/43 | third party advisory mailing list |
| http://www.openwall.com/lists/oss-security/2023/07/28/1 | mailing list |
| http://www.openwall.com/lists/oss-security/2023/08/25/1 | mailing list |
| http://www.openwall.com/lists/oss-security/2023/08/25/4 | mailing list |
| https://security.netapp.com/advisory/ntap-20230908-0001/ | third party advisory |