🛡️ UBUNTU-CVE-2021-3739
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A NULL pointer dereference flaw was found in the btrfs_rm_device function in fs/btrfs/volumes.c in the Linux Kernel, where triggering the bug requires ‘CAP_SYS_ADMIN’. This flaw allows a local attacker to crash the system or leak kernel internal information. The highest threat from this vulnerability is to system availability.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2021-08-27
Updated 2026-06-15
Modified 2026-06-03
Fix URL N/A

Affected Packages

Software From version Fixed in
linux 5.4.0-90.101
linux-aws 5.4.0-1059.62
linux-aws-5.0
linux-aws-5.11 5.11.0-1020.21~20.04.2
linux-aws-5.3
linux-aws-5.4 5.4.0-1059.62~18.04.1
linux-aws-5.8
linux-aws-fips
linux-azure 5.4.0-1063.66
linux-azure-5.11 5.11.0-1020.21~20.04.1
linux-azure-5.3
linux-azure-5.4 5.4.0-1063.66~18.04.1
linux-azure-5.8
linux-azure-edge
linux-azure-fips
linux-bluefield
linux-fips
linux-gcp 5.4.0-1057.61
linux-gcp-5.11 5.11.0-1021.23~20.04.1
linux-gcp-5.3
linux-gcp-5.4 5.4.0-1057.61~18.04.1
linux-gcp-5.8
linux-gcp-edge
linux-gcp-fips
linux-gke 5.4.0-1055.58
linux-gke-4.15
linux-gke-5.4 5.4.0-1055.58~18.04.1
linux-gkeop 5.4.0-1026.27
linux-gkeop-5.4 5.4.0-1026.27~18.04.1
linux-hwe
linux-hwe-5.11 5.11.0-38.42~20.04.1
linux-hwe-5.4 5.4.0-90.101~18.04.1
linux-hwe-5.8
linux-hwe-edge
linux-ibm 5.4.0-1007.8
linux-intel-5.13
linux-intel-iot-realtime
linux-kvm 5.4.0-1049.51
linux-oem
linux-oem-5.10 5.10.0-1050.52
linux-oem-5.13 5.13.0-1017.21
linux-oem-5.6
linux-oracle 5.4.0-1057.61
linux-oracle-5.0
linux-oracle-5.11 5.11.0-1020.21~20.04.1
linux-oracle-5.3
linux-oracle-5.4 5.4.0-1057.61~18.04.1
linux-oracle-5.8
linux-raspi 5.4.0-1046.50
linux-raspi-5.4 5.4.0-1046.50~18.04.1
linux-raspi-realtime
linux-raspi2
linux-realtime
linux-riscv
linux-riscv-5.11 5.11.0-1021.22~20.04.1
linux-riscv-5.8

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