A use-after-free flaw was found in nfc_llcp_find_local in net/nfc/llcp_core.c in NFC in the Linux kernel. This flaw allows a local user with special privileges to impact a kernel information leak issue.
Workaround:
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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-2023-3863 | third party advisory vdb entry |
| https://bugzilla.redhat.com/show_bug.cgi?id=2225126 | patch third party advisory issue tracking |
| https://github.com/torvalds/linux/commit/6709d4b7bc2e079241fdef15d1160581c5261c10 | patch |
| https://www.debian.org/security/2023/dsa-5480 | third party advisory |
| https://www.debian.org/security/2023/dsa-5492 | third party advisory |
| https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html | third party advisory mailing list |
| https://security.netapp.com/advisory/ntap-20240202-0002/ |