Buffer overflow in Linux Kernel
CVE-2020-14390
A flaw was found in the Linux kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.004 (26.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- Linux Kernel — versions 5.9.0
- Debian Linux — versions 9.0
- Kernel — versions Linux kernel versions before 5.9-rc6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html (vendor-advisory)
- lists.debian.org/debian-lts-announce/2020/10/msg00032.html (mailing-list)
- lists.debian.org/debian-lts-announce/2020/10/msg00034.html (mailing-list)
Frequently asked questions
- What is CVE-2020-14390?
- CVE-2020-14390 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Write. CVSS score: 5.6/10. Published 2020-09-18.
- How severe is CVE-2020-14390?
- Medium severity. CVSS v3 base score is 5.6 out of 10.
- Is CVE-2020-14390 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.