Description

The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file.

References

http://rhn.redhat.com/errata/RHSA-2017-0817.html

http://www.openwall.com/lists/oss-security/2016/10/13/5

http://www.securityfocus.com/bid/93544

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

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

https://access.redhat.com/errata/RHSA-2017:2669

https://bugzilla.redhat.com/show_bug.cgi?id=1373966

https://source.android.com/security/bulletin/2017-01-01.html

Details

Risk Information

CVSS v2

CVSS v3