CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
33.3%
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.
Author | Note |
---|---|
sbeattie | reproducer in lore.kernel.org link |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-115.116 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-45.49 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-186.216 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1080.84 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1022.22 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1075.79 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1111.123 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.3 | < 5.3.0-1032.34~18.04.2 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < 5.4.0-1022.22~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1080.84~16.04.1 | UNKNOWN |
git.kernel.org/linus/b86dab054059b970111b5516ae548efaae5b3aae
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b86dab054059b970111b5516ae548efaae5b3aae
launchpad.net/bugs/cve/CVE-2020-13974
lkml.org/lkml/2020/3/22/482
lore.kernel.org/lkml/CAEAjams79+V8bxpcp3UAsU1AnJ+gx2y+ZqhDhjJCpZn2oeZA4Q@mail.gmail.com/
nvd.nist.gov/vuln/detail/CVE-2020-13974
security-tracker.debian.org/tracker/CVE-2020-13974
ubuntu.com/security/notices/USN-4427-1
ubuntu.com/security/notices/USN-4439-1
ubuntu.com/security/notices/USN-4440-1
ubuntu.com/security/notices/USN-4483-1
ubuntu.com/security/notices/USN-4485-1
www.cve.org/CVERecord?id=CVE-2020-13974
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
33.3%