7.8

CVE-2020-13974

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 4.4.227
Linux ≫ Linux Kernel Version >= 4.5 < 4.9.227
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.184
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.128
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.46
Linux ≫ Linux Kernel Version >= 5.5 < 5.6.18
Linux ≫ Linux Kernel Version >= 5.7 < 5.7.2
Debian ≫ Debian Linux Version 9.0
Canonical ≫ Ubuntu Linux Version 14.04 SwEdition esm
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition esm
Canonical ≫ Ubuntu Linux Version 18.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 20.04 SwEdition lts
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.57% 0.438
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NIST 7.2 3.9 10
AV:L/AC:L/Au:N/C:C/I:C/A:C
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

https://www.oracle.com/security-alerts/cpujul2022.html
Third Party Advisory
https://usn.ubuntu.com/4485-1/
Third Party 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
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
Third Party Advisory
Mailing List
https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html
Third Party Advisory
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html
Third Party Advisory
Mailing List
https://usn.ubuntu.com/4483-1/
Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932b
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aae
Patch
Vendor Advisory
https://lkml.org/lkml/2020/3/22/482
Vendor Advisory
Exploit