A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25669
Reference (s):
- https://security.netapp.com/advisory/ntap-20210702-0006/
- https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e
- URL: https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e
- https://www.openwall.com/lists/oss-security/2020/11/05/2,
- URL: https://www.openwall.com/lists/oss-security/2020/11/05/2,