CVE-2021-4149

Katalog CVE

CVSS 5.5 · Medium EPSS 0,40%

Kerentanan Improper Locking pada linux kernel, debian linux. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

23 Maret 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.5 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-667: Improper Locking

EPSS (30 hari)

0,40% peluang dieksploitasi; lebih tinggi dari 32,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://lkml.org/lkml/2021/10/18/885 exploit · mailing list · patch · advisory pihak ketiga
• https://bugzilla.redhat.com/show_bug.cgi?id=2026485 issue tracking · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html mailing list · advisory pihak ketiga
• https://lkml.org/lkml/2021/9/13/2565 exploit · mailing list · advisory pihak ketiga