Integer overflow in Linux Kernel
CVE-2020-13974
An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/keyboard.c has an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. NOTE: Members in the community argue that the integer overflow does not lead to a security issue in this case.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% 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 14.04, 16.04, 18.04
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html (vendor-advisory, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4427-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4439-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4440-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/08/msg00019.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4483-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4485-1/ (vendor-advisory, Third Party Advisory)
- www.oracle.com/security-alerts/cpujul2022.html (Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-13974?
- CVE-2020-13974 is a high-severity vulnerability in Linux Kernel, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2020-06-09.
- How severe is CVE-2020-13974?
- High severity. CVSS v3 base score is 7.8 out of 10.