CVE-2020-28941

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5
Description
An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.
Overview
  • CVE ID
  • CVE-2020-28941
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-11-19T19:15:11
  • Last Modified Date
  • 2022-10-19T14:44:28
Weakness Enumerations
CWE URL
CWE-763 http://cwe.mitre.org/data/definitions/763.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.9.9
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 4.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
http://www.openwall.com/lists/oss-security/2020/11/19/5 Mailing List Patch Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-linus&id=d4122754442799187d5d537a9c039a49a67e57f1 Patch Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d4122754442799187d5d537a9c039a49a67e57f1 Patch Vendor Advisory
https://www.openwall.com/lists/oss-security/2020/11/19/3 Mailing List Patch Third Party Advisory
https://github.com/torvalds/linux/commit/d4122754442799187d5d537a9c039a49a67e57f1 Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZF4OGZPKTAJJXWHPIFP3LHEWWEMR5LPT/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TITJQPYDWZ4NB2ONJWUXW75KSQIPF35T/ Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-28941
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28941
History
Created Old Value New Value Data Type Notes
2022-05-10 07:30:38 Added to TrackCVE
2022-12-05 17:06:13 2020-11-19T19:15Z 2020-11-19T19:15:11 CVE Published Date updated
2022-12-05 17:06:13 2022-10-19T14:44:28 CVE Modified Date updated
2022-12-05 17:06:13 Analyzed Vulnerability Status updated