Detections
Analytics
CVE-2017-12192
medium
Description
The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation.
References
https://usn.ubuntu.com/3583-2/
https://usn.ubuntu.com/3583-1/
https://lkml.org/lkml/2017/9/18/764
https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678
https://bugzilla.redhat.com/show_bug.cgi?id=1493435
https://access.redhat.com/errata/RHSA-2018:0151
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5