CVE-2021-44879

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-44879
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.3 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
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://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/
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://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:31

Type Values Removed Values Added
References () https://bugzilla.kernel.org/show_bug.cgi?id=215231 - Exploit, Issue Tracking, Vendor Advisory () https://bugzilla.kernel.org/show_bug.cgi?id=215231 - Exploit, Issue Tracking, Vendor Advisory
References () https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3 - Mailing List, Vendor Advisory () https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3 - Mailing List, Vendor Advisory
References () https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f - Mailing List, Patch, Vendor Advisory () https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f - Mailing List, Patch, Vendor Advisory
References () https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html - () https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html -
References () https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html - () https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html -
References () https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/ - () https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/ -

22 Feb 2022, 18:26

Type Values Removed Values Added
CWE CWE-476
References (MISC) https://bugzilla.kernel.org/show_bug.cgi?id=215231 - (MISC) https://bugzilla.kernel.org/show_bug.cgi?id=215231 - Exploit, Issue Tracking, Vendor Advisory
References (MISC) https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/ - (MISC) https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao@kernel.org/T/ - Mailing List, Patch, Vendor Advisory
References (MISC) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f - (MISC) https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f - Mailing List, Patch, Vendor Advisory
References (CONFIRM) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3 - (CONFIRM) https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3 - Mailing List, Vendor Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : 4.3
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

14 Feb 2022, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2022-02-14 12:15

Updated : 2024-11-21 06:31

NVD link : CVE-2021-44879

Mitre link : CVE-2021-44879

CVE.ORG link : CVE-2021-44879

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference