A flaw was found in the Nosy driver in the Linux kernel. This issue allows a device to be inserted twice into a doubly-linked list, leading to a use-after-free when one of these devices is removed. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Versions before kernel 5.12-rc6 are affected
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 |
|---|---|
| http://www.openwall.com/lists/oss-security/2021/04/07/1 | patch mailing list third party advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1948045 | patch third party advisory issue tracking |
| https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html | third party advisory mailing list |
| https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html | third party advisory mailing list |
| https://security.netapp.com/advisory/ntap-20210629-0002/ | third party advisory |