Description

The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81

http://www.securityfocus.com/bid/97258

https://access.redhat.com/errata/RHSA-2017:1842

https://access.redhat.com/errata/RHSA-2017:2077

https://access.redhat.com/errata/RHSA-2017:2437

https://access.redhat.com/errata/RHSA-2017:2444

https://bugzilla.redhat.com/show_bug.cgi?id=1428353

https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81

https://usn.ubuntu.com/3849-1/

https://usn.ubuntu.com/3849-2/

Details

Risk Information

CVSS v2

CVSS v3