CVE-2020-25669

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CVE-2020-25669

Summary:

Details: 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://www.openwall.com/lists/oss-security/2020/11/20/5%2C, https://www.openwall.com/lists/oss-security/2020/11/05/2%2C, https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html, https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html, https://security.netapp.com/advisory/ntap-20210702-0006/, https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e, http://www.openwall.com/lists/oss-security/2020/11/05/2, http://www.openwall.com/lists/oss-security/2020/11/20/5