CVE-2021-4149

A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://lkml.org/lkml/2021/9/13/2565	Exploit Mailing List Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2026485	Issue Tracking Third Party Advisory
https://lkml.org/lkml/2021/10/18/885	Exploit Mailing List Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel:5.15:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.15:-::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc4::::::
	cpe:2.3:o:linux:linux_kernel::::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Information

Published : 2022-03-23 13:15

Updated : 2023-02-01 07:53

NVD link : CVE-2021-4149

Mitre link : CVE-2021-4149

JSON object : View

CWE

CWE-667

Improper Locking

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Products Affected

debian

debian_linux

linux

linux_kernel

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