In the Linux kernel before 5.1.6, there is a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that will cause denial of service, aka CID-dea37a972655.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.6 | third party advisory release notes |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dea37a97265588da604c6ba80160a287b72c7bfd | exploit vendor advisory |
| https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html | third party advisory mailing list |
| https://security.netapp.com/advisory/ntap-20200204-0002/ | third party advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html | mailing list broken link third party advisory vendor advisory |