CVE-2020-13974
published 2020-06-09CVE-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…
PriorityP336high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.57%
44.0th percentile
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.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | linux | < linux 5.7.6-1 (bookworm) | linux 5.7.6-1 (bookworm) |
| linux | linux_kernel | < 4.4.227 | 4.4.227 |
| linux | linux_kernel | >= 0 < 5.7.6-1 | 5.7.6-1 |
| linux | linux_kernel | >= 0 < 5.7.6-1 | 5.7.6-1 |
| linux | linux_kernel | >= 0 < 5.7.6-1 | 5.7.6-1 |
| linux | linux_kernel | >= 0 < 5.7.6-1 | 5.7.6-1 |
| linux | linux_kernel | >= 0 < 4.4.0-186.216 | 4.4.0-186.216 |
| linux | linux_kernel | >= 0 < 4.15.0-115.116 | 4.15.0-115.116 |
| linux | linux_kernel | >= 0 < 5.4.0-45.49 | 5.4.0-45.49 |
| linux | linux_kernel | >= 4.10 < 4.14.184 | 4.14.184 |
| linux | linux_kernel | >= 4.15 < 4.19.128 | 4.19.128 |
| linux | linux_kernel | >= 4.20 < 5.4.46 | 5.4.46 |
| linux | linux_kernel | >= 4.5 < 4.9.227 | 4.9.227 |
| linux | linux_kernel | >= 5.5 < 5.6.18 | 5.6.18 |
| linux | linux_kernel | >= 5.7 < 5.7.2 | 5.7.2 |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cm1_kernel_5.4.91-11_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_debian7.8HIGH
vendor_msrc7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-09-03·CVSS 5.5
CVE-2019-20810 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)
Fan Yang discovered that the mremap implementation in the Linux kernel did
not properly handle DAX Huge Pages. A local attacker with access to DAX
storage could use this to gain administrative privileges. (CVE-2020-10757)
It was discovered that the Linux kernel did not correctly apply Speculative
Store Bypass Disable (SSBD) mitigations in certain situations. A local
attacker could possibly use this to expose sensitive information.
(CV
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-09-03·CVSS 7.8
CVE-2018-20669 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Timothy Michaud discovered that the i915 graphics driver in the Linux
kernel did not properly validate user memory locations for the
i915_gem_execbuffer2_ioctl. A local attacker could possibly use this to
cause a denial of service or execute arbitrary code. (CVE-2018-20669)
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use t
Ubuntu
linux kernel vulnerabilities
vendor_ubuntu·2020-07-31·CVSS 4.1
CVE-2019-16089 [MEDIUM] linux kernel vulnerabilities
Title: linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-19462)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to caus
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-27·CVSS 4.1
CVE-2019-12380 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
lo
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-27·CVSS 4.6
CVE-2020-10768 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)
Jason A. Donenfeld discovered that the ACPI implementation in the Linux
kernel did not properly restrict loading SSDT code from an EFI variable. A
privileged attacker could use this to bypass Secure Boot
Microsoft
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
vendor_msrc·2020-06-09·CVSS 7.8
CVE-2020-13974 [HIGH] CWE-190 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
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post
Red Hat
kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c
vendor_redhat·2020-03-22·CVSS 7.8
CVE-2020-13974 [HIGH] CWE-190 kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c
kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c
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.
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.
Statement: No code depends on this integer overflow so it is unlikely that the vulnerability can be used for anything apart from crashing the system. The impact has been redu
Debian
CVE-2020-13974: linux - An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/ke...
vendor_debian·2020·CVSS 7.8
CVE-2020-13974 [HIGH] CVE-2020-13974: linux - An issue was discovered in the Linux kernel 4.4 through 5.7.1. drivers/tty/vt/ke...
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.
Scope: local
bookworm: resolved (fixed in 5.7.6-1)
bullseye: resolved (fixed in 5.7.6-1)
forky: resolved (fixed in 5.7.6-1)
sid: resolved (fixed in 5.7.6-1)
trixie: resolved (fixed in 5.7.6-1)
GHSA
GHSA-f863-pmcq-8c6w: An issue was discovered in the Linux kernel through 5
ghsa_unreviewed·2022-05-24
CVE-2020-13974 [HIGH] CWE-190 GHSA-f863-pmcq-8c6w: An issue was discovered in the Linux kernel through 5
An issue was discovered in the Linux kernel 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.
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
osv·2020-09-03·CVSS 7.8
CVE-2018-20669 [HIGH] linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
Timothy Michaud discovered that the i915 graphics driver in the Linux
kernel did not properly validate user memory locations for the
i915_gem_execbuffer2_ioctl. A local attacker could possibly use this to
cause a denial of service or execute arbitrary code. (CVE-2018-20669)
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not
OSV
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
osv·2020-09-03·CVSS 5.5
CVE-2019-20810 [MEDIUM] linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)
Fan Yang discovered that the mremap implementation in the Linux kernel did
not properly handle DAX Huge Pages. A local attacker with access to DAX
storage could use this to gain administrative privileges. (CVE-2020-10757)
It was discovered that the Linux kernel did not correctly apply Speculative
Store Bypass Disable (SSBD) mitigations in certain
OSV
linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
osv·2020-07-31·CVSS 4.1
CVE-2019-16089 [MEDIUM] linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial of service (system
crash). (CVE-2019-19462)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximat
OSV
linux-gke-5.0, linux-oem-osp1 vulnerabilities
osv·2020-07-27·CVSS 4.1
CVE-2019-16089 [MEDIUM] linux-gke-5.0, linux-oem-osp1 vulnerabilities
linux-gke-5.0, linux-oem-osp1 vulnerabilities
It was discovered that the network block device (nbd) implementation in the
Linux kernel did not properly check for error conditions in some
situations. An attacker could possibly use this to cause a denial of
service (system crash). (CVE-2019-16089)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly validate file system metadata in some situations.
An attacker could use this to construct a malicious btrfs image that, when
mounted, could cause a denial of service (system crash). (CVE-2019-19036)
It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly check return values in some situations. A
local attacker could possibly use this to cause a denial o
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
osv·2020-07-27·CVSS 4.6
CVE-2019-19947 [MEDIUM] linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities
It was discovered that the Kvaser CAN/USB driver in the Linux kernel did
not properly initialize memory in certain situations. A local attacker
could possibly use this to expose sensitive information (kernel memory).
(CVE-2019-19947)
Chuhong Yuan discovered that go7007 USB audio device driver in the Linux
kernel did not properly deallocate memory in some failure conditions. A
physically proximate attacker could use this to cause a denial of service
(memory exhaustion). (CVE-2019-20810)
Jason A. Donenfeld discovered that the ACPI implementation in the Linux
kernel did not properly restrict loading SSDT code from an EFI variable. A
privileged attacker could use this to bypass Secure Boot lockdown
OSV
CVE-2020-13974: An issue was discovered in the Linux kernel 4
osv·2020-06-09·CVSS 7.8
CVE-2020-13974 [HIGH] CVE-2020-13974: An issue was discovered in the Linux kernel 4
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlhttps://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932bhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aaehttps://lists.debian.org/debian-lts-announce/2020/08/msg00019.htmlhttps://lkml.org/lkml/2020/3/22/482https://usn.ubuntu.com/4427-1/https://usn.ubuntu.com/4439-1/https://usn.ubuntu.com/4440-1/https://usn.ubuntu.com/4483-1/https://usn.ubuntu.com/4485-1/https://www.oracle.com/security-alerts/cpujul2022.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.htmlhttps://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=dad0bf9ce93fa40b667eccd3306783f4db4b932bhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aaehttps://lists.debian.org/debian-lts-announce/2020/08/msg00019.htmlhttps://lkml.org/lkml/2020/3/22/482https://usn.ubuntu.com/4427-1/https://usn.ubuntu.com/4439-1/https://usn.ubuntu.com/4440-1/https://usn.ubuntu.com/4483-1/https://usn.ubuntu.com/4485-1/https://www.oracle.com/security-alerts/cpujul2022.html
2020-06-09
Published