5.5

CVE-2021-4149

Exploit

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.

Data is provided by the National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 5.15
Linux ≫ Linux Kernel Version5.15 Update-
Linux ≫ Linux Kernel Version5.15 Updaterc1
Linux ≫ Linux Kernel Version5.15 Updaterc2
Linux ≫ Linux Kernel Version5.15 Updaterc3
Linux ≫ Linux Kernel Version5.15 Updaterc4
Linux ≫ Linux Kernel Version5.15 Updaterc5
Debian ≫ Debian Linux Version9.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.02% 0.041
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 2.1 3.9 2.9
AV:L/AC:L/Au:N/C:N/I:N/A:P
CWE-667 Improper Locking

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

https://bugzilla.redhat.com/show_bug.cgi?id=2026485
Third Party Advisory
Issue Tracking
https://lkml.org/lkml/2021/10/18/885
Patch
Third Party Advisory
Exploit
Mailing List
https://lkml.org/lkml/2021/9/13/2565
Third Party Advisory
Exploit
Mailing List