Information disclosure in Linux Kernel
CVE-2018-15594
arch/x86/kernel/paravirt.c in the Linux kernel before 4.18.1 mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtual guests.
Vulnerability class: Information Disclosure
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:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (44.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3776-1/ (vendor-advisory, Third Party Advisory)
- twitter.com/grsecurity/status/1029324426142199808 (Third Party Advisory)
- usn.ubuntu.com/3776-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3777-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3775-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/10/msg00003.html (mailing-list, Mailing List, Third Party Advisory)
- github.com/torvalds/linux/commit/5800dc5c19f34e6e03b5adab1282535cb102fafd (Patch, Third Party Advisory, Mitigation)
- www.debian.org/security/2018/dsa-4308 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3775-2/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/105120 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-15594?
- CVE-2018-15594 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2018-08-20.
- How severe is CVE-2018-15594?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-15594 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.