CVE-2021-4203

CVSS V2 Medium 4.9 CVSS V3 Medium 6.8
Description
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
Overview
  • CVE ID
  • CVE-2021-4203
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-03-25T19:15:09
  • Last Modified Date
  • 2022-12-08T22:19:30
Weakness Enumerations
CWE URL
CWE-362 http://cwe.mitre.org/data/definitions/362.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.15
cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:S/C:P/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 6.8
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.8
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.6
  • Impact Score
  • 5.2
References
Reference URL Reference Tags
https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1 Exploit Issue Tracking Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2036934 Issue Tracking Patch Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814 Patch Vendor Advisory
https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet@gmail.com/T/ Mailing List Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20221111-0003/
https://www.oracle.com/security-alerts/cpujul2022.html
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-4203
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4203
History
Created Old Value New Value Data Type Notes
2022-04-04 00:41:55 Added to TrackCVE
2022-12-06 13:18:32 2022-03-25T19:15Z 2022-03-25T19:15:09 CVE Published Date updated
2022-12-06 13:18:32 2022-11-14T15:15:15 CVE Modified Date updated
2022-12-06 13:18:32 Undergoing Analysis Vulnerability Status updated
2022-12-06 13:18:36 References updated
2022-12-08 23:14:30 2022-12-08T22:19:30 CVE Modified Date updated
2022-12-08 23:14:30 Undergoing Analysis Analyzed Vulnerability Status updated