CVE-2021-44879

CVSS V2 Medium 4.3 CVSS V3 Medium 5.5
Description
In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
Overview
  • CVE ID
  • CVE-2021-44879
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-02-14T12:15:15
  • Last Modified Date
  • 2022-02-22T18:26:53
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 5.16.3
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • 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.kernel.org/show_bug.cgi?id=215231 Exploit Issue Tracking Vendor Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3 Mailing List Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f Mailing List Patch Vendor Advisory
https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/ Mailing List Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-44879
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44879
History
Created Old Value New Value Data Type Notes
2022-05-10 06:31:57 Added to TrackCVE
2022-12-06 09:40:20 2022-02-14T12:15Z 2022-02-14T12:15:15 CVE Published Date updated
2022-12-06 09:40:20 2022-02-22T18:26:53 CVE Modified Date updated
2022-12-06 09:40:20 Analyzed Vulnerability Status updated