CVE-2021-44879

Published on: Not Yet Published

Last Modified on: 02/22/2022 06:26:00 PM UTC

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Certain versions of Linux Kernel from Linux contain the following vulnerability:

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.

  • CVE-2021-44879 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.

CVSS3 Score: 5.5 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW NONE REQUIRED
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE NONE HIGH

CVSS2 Score: 4.3 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK MEDIUM NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE NONE PARTIAL

CVE References

Description Tags Link
cdn.kernel.org
text/plain
URL Logo CONFIRM cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3
[f2fs-dev] [PATCH 1/3] f2fs: fix to do sanity check on inode type during garbage collection lore.kernel.org
text/html
URL Logo MISC lore.kernel.org/linux-f2fs-devel/[email protected]/T/
215231 – kernel NULL pointer dereference triggered in folio_mark_dirty() when mount and operate on a crafted f2fs image bugzilla.kernel.org
text/html
URL Logo MISC bugzilla.kernel.org/show_bug.cgi?id=215231
kernel/git/torvalds/linux.git - Linux kernel source tree git.kernel.org
text/html
URL Logo MISC git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f

Related QID Numbers

  • 198672 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5302-1)
  • 198745 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5383-1)
  • 377124 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2022:0029)
  • 377181 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX2-SA-2022:0022)
  • 671703 EulerOS Security Update for kernel (EulerOS-SA-2022-1735)
  • 671804 EulerOS Security Update for kernel (EulerOS-SA-2022-1844)
  • 751831 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0768-1)
  • 751832 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0765-1)
  • 751833 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0757-1)
  • 751835 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0767-1)
  • 751836 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0759-1)
  • 751838 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:0766-1)
  • 751851 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2022:0768-1)
  • 751952 OpenSUSE Security Update for Linux Kernel (openSUSE-SU-2022:1039-1)
  • 751956 OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2022:1037-1)
  • 752016 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1039-1)
  • 752370 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:2520-1)
  • 753148 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:2615-1)
  • 753348 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1038-1)
  • 753373 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1257-1)
  • 753422 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2022:1037-1)
  • 900712 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8569)
  • 900904 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8577-1)
  • 901357 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8569-1)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
LinuxLinux KernelAllAllAllAll
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-44879 : In gc_data_segment in fs/f2fs/gc.c in the #Linux #kernel before 5.16.3, special files are not cons… twitter.com/i/web/status/1… 2022-02-13 07:04:02
Twitter Icon @Har_sia CVE-2021-44879 har-sia.info/CVE-2021-44879… #HarsiaInfo 2022-02-14 07:01:04
Reddit Logo Icon /r/netcve CVE-2021-44879 2022-02-13 07:38:38
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