CVE-2020-27830

CVSS V2 Low 2.1 CVSS V3 Medium 5.5
Description
A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.
Overview
  • CVE ID
  • CVE-2020-27830
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-05-13T15:15:07
  • Last Modified Date
  • 2021-09-07T21:59:33
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.9.14
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 2.1
  • Severity
  • LOW
  • Exploitability Score
  • 3.9
  • Impact Score
  • 2.9
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
https://bugzilla.redhat.com/show_bug.cgi?id=1919900 Issue Tracking Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/12/08/1 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/12/08/4 Mailing List Third Party Advisory
https://www.debian.org/security/2021/dsa-4843 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210625-0004/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-27830
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27830
History
Created Old Value New Value Data Type Notes
2022-05-10 16:07:46 Added to TrackCVE
2022-12-05 02:13:26 2021-05-13T15:15Z 2021-05-13T15:15:07 CVE Published Date updated
2022-12-05 02:13:26 2021-09-07T21:59:33 CVE Modified Date updated
2022-12-05 02:13:26 Analyzed Vulnerability Status updated