CVE-2020-13974
kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
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.
Se detectó un problema en el kernel de Linux versión 4.4 hasta la versión 5.7.1. En el archivo drivers/tty/vt/keyboard.c presenta un desbordamiento de enteros si se llama a la función k_ascii varias veces seguidas, también se conoce como CID-b86dab054059. NOTA: Los miembros de la comunidad argumentan que el desbordamiento de números enteros no conduce a un problema de seguridad en este caso
A flaw integer overflow in the Linux kernel's virtual terminal keyboard driver was found in the way the user sends some specific keyboard code multiple times. A local user could use this flaw to crash the system or possibly escalate their privileges on the system.
Red Hat Advanced Cluster Management for Kubernetes 2.5.0 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and security issues. Issues addressed include privilege escalation and traversal vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-06-09 CVE Reserved
- 2020-06-09 CVE Published
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- 2025-03-18 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-190: Integer Overflow or Wraparound
CAPEC
References (14)
URL | Tag | Source |
---|---|---|
https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html | Mailing List |
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https://www.oracle.com/security-alerts/cpujul2022.html | Third Party Advisory |
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URL | Date | SRC |
---|---|---|
https://lkml.org/lkml/2020/3/22/482 | 2024-08-04 |
URL | Date | SRC |
---|---|---|
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aae | 2023-02-24 |
URL | Date | SRC |
---|---|---|
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html | 2023-02-24 | |
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html | 2023-02-24 | |
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932b | 2023-02-24 | |
https://usn.ubuntu.com/4427-1 | 2023-02-24 | |
https://usn.ubuntu.com/4439-1 | 2023-02-24 | |
https://usn.ubuntu.com/4440-1 | 2023-02-24 | |
https://usn.ubuntu.com/4483-1 | 2023-02-24 | |
https://usn.ubuntu.com/4485-1 | 2023-02-24 | |
https://access.redhat.com/security/cve/CVE-2020-13974 | 2022-05-10 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2016169 | 2022-05-10 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 4.4.227 Search vendor "Linux" for product "Linux Kernel" and version " < 4.4.227" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.5 < 4.9.227 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.227" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.10 < 4.14.184 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.184" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.15 < 4.19.128 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.128" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.20 < 5.4.46 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.46" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.6.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.6.18" | - |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.7 < 5.7.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.7 < 5.7.2" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | esm |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
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