A flaw in Linux Kernel found in nfcmrvl_nci_unregister_dev() in drivers/nfc/nfcmrvl/main.c can lead to use after free both read or write when non synchronized between cleanup routine and firmware download routine.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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://github.com/torvalds/linux/commit/d270453a0d9ec10bb8a802a142fb1b3601a83098 | third party advisory patch |
| http://www.openwall.com/lists/oss-security/2022/06/05/4 | mailing list patch exploit third party advisory |
| http://www.openwall.com/lists/oss-security/2022/06/09/1 | mailing list patch exploit third party advisory |
| https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html | third party advisory mailing list |
| https://www.debian.org/security/2022/dsa-5173 | third party advisory vendor advisory |
| https://security.netapp.com/advisory/ntap-20220707-0007/ | third party advisory |