NULL pointer dereference in Linux Kernel
CVE-2017-12192
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- usn.ubuntu.com/3583-2/ (vendor-advisory)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5 (Vendor Advisory)
- usn.ubuntu.com/3583-1/ (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:0151 (vendor-advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678 (Patch, Vendor Advisory)
- lkml.org/lkml/2017/9/18/764 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-12192?
- CVE-2017-12192 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2017-10-12.
- How severe is CVE-2017-12192?
- Medium severity. CVSS v3 base score is 5.5 out of 10.