CVEvulnerability
CVE-2021-4149
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2022-03-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-667
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.
Affected configurations
• linux linux kernel (< 5.15)
• linux linux kernel 5.15
• debian debian linux 9.0
Related
Weakness · CWE (1)
- CWE-667 Improper Locking weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2026485 Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing List, Third Party Advisory
- https://lkml.org/lkml/2021/10/18/885 Exploit, Mailing List, Patch, Third Party Advisory
- 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://lists.debian.org/debian-lts-announce/2022/07/msg00000.html Mailing List, Third Party Advisory
- https://lkml.org/lkml/2021/10/18/885 Exploit, Mailing List, Patch, Third Party Advisory
- https://lkml.org/lkml/2021/9/13/2565 Exploit, Mailing List, Third Party Advisory