VulnerabilityModified
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.
MEDIUM 5.5EPSS 0.40%
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
Description
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.40% probability · 34th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel · debian/debian linux
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2026485Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlMailing List, Third Party Advisory
- https://lkml.org/lkml/2021/10/18/885Exploit, Mailing List, Patch, Third Party Advisory
- https://lkml.org/lkml/2021/9/13/2565Exploit, Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2026485Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlMailing List, Third Party Advisory
- https://lkml.org/lkml/2021/10/18/885Exploit, Mailing List, Patch, Third Party Advisory
- https://lkml.org/lkml/2021/9/13/2565Exploit, Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.