Information disclosure in Linux Kernel
CVE-2019-18660
The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Fedoraproject Fedora — versions 30, 31
- openSUSE Leap — versions 15.1
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2019/11/27/1 (Patch, Mailing List, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2019/11/27/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.1 (Release Notes, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20200103-0001/ (Third Party Advisory)
- usn.ubuntu.com/4228-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4227-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-18660?
- CVE-2019-18660 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 4.7/10. Published 2019-11-27.
- How severe is CVE-2019-18660?
- Medium severity. CVSS v3 base score is 4.7 out of 10.