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CVE
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CVE-2021-4149Date: (C)2022-03-25   (M)2024-05-24


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 Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 5.5CVSS Score : 2.1
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
https://bugzilla.redhat.com/show_bug.cgi?id=2026485
https://lkml.org/lkml/2021/10/18/885
https://lkml.org/lkml/2021/9/13/2565

CWE    1
CWE-667
OVAL    19
oval:org.secpod.oval:def:3000134
oval:org.secpod.oval:def:707142
oval:org.secpod.oval:def:1505580
oval:org.secpod.oval:def:89047619
...

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