Buffer overflow in Linux Kernel
CVE-2019-19332
An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way the Linux kernel's KVM hypervisor handled the 'KVM_GET_EMULATED_CPUID' ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the '/dev/kvm' device could use this flaw to crash the system, resulting in a denial of service.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.6% 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 — versions 3.13 through 5.4
- Linux Kernel
- Red Hat Enterprise Linux — versions 7.0, 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2019/12/16/1 (Exploit, Mailing List, Third Party Advisory)
- lore.kernel.org/kvm/000000000000ea5ec20598d90e50@google.com/
- packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2… (Patch, VDB Entry, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/01/msg00013.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4254-1/ (vendor-advisory)
- usn.ubuntu.com/4254-2/ (vendor-advisory)
- security.netapp.com/advisory/ntap-20200204-0002/
- usn.ubuntu.com/4258-1/ (vendor-advisory)
- usn.ubuntu.com/4287-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2019-19332?
- CVE-2019-19332 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 6.1/10. Published 2020-01-09.
- How severe is CVE-2019-19332?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2019-19332 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.