Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.13.4 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863cPatchVendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5Vendor Advisory
- https://access.redhat.com/errata/RHSA-2018:0151
- https://bugzilla.redhat.com/show_bug.cgi?id=1493435Issue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e96167PatchVendor Advisory
- https://lkml.org/lkml/2017/9/18/764Mailing ListThird Party Advisory
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863cPatchVendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5Vendor Advisory
- https://access.redhat.com/errata/RHSA-2018:0151
- https://bugzilla.redhat.com/show_bug.cgi?id=1493435Issue TrackingThird Party Advisory
- https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e96167PatchVendor Advisory
- https://lkml.org/lkml/2017/9/18/764Mailing ListThird Party Advisory
- https://usn.ubuntu.com/3583-1/
FAQ
What is CVE-2017-12192?
CVE-2017-12192 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 instan...
How severe is CVE-2017-12192?
CVE-2017-12192 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-12192?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.