VulnerabilityModified
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.
HIGH 7.8EPSS 0.57%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.57% probability · 45th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- linux/linux kernel · debian/debian linux · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlMailing List, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932bVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aaePatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00019.htmlMailing List, Third Party Advisory
- https://lkml.org/lkml/2020/3/22/482Exploit, Vendor Advisory
- https://usn.ubuntu.com/4427-1/Third Party Advisory
- https://usn.ubuntu.com/4439-1/Third Party Advisory
- https://usn.ubuntu.com/4440-1/Third Party Advisory
- https://usn.ubuntu.com/4483-1/Third Party Advisory
- https://usn.ubuntu.com/4485-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlMailing List, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932bVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aaePatch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00019.htmlMailing List, Third Party Advisory
- https://lkml.org/lkml/2020/3/22/482Exploit, Vendor Advisory
- https://usn.ubuntu.com/4427-1/Third Party Advisory
- https://usn.ubuntu.com/4439-1/Third Party Advisory
- https://usn.ubuntu.com/4440-1/Third Party Advisory
- https://usn.ubuntu.com/4483-1/Third Party Advisory
- https://usn.ubuntu.com/4485-1/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.