Description

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.

References

https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e

https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

http://www.openwall.com/lists/oss-security/2020/11/20/5

https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html

http://www.openwall.com/lists/oss-security/2020/11/05/2

https://www.openwall.com/lists/oss-security/2020/11/05/2,

https://www.openwall.com/lists/oss-security/2020/11/20/5,

https://security.netapp.com/advisory/ntap-20210702-0006/

Details

Risk Information

CVSS v2

CVSS v3