A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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/2020/11/01/1 | mailing list patch exploit third party advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UTVACC6PGS6OSD3EYY7FZUAZT2EUMFH5/ | vendor advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PW3OASG7OEMHANDWBM5US5WKTOC76KMH/ | vendor advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VEIEGQXUW37YHZ5MTAZTDCIMHUN26NJS/ | vendor advisory |
| https://www.openwall.com/lists/oss-security/2020/11/01/1 | mailing list patch exploit third party advisory |
| 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-20210702-0008/ | third party advisory |