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[email protected]CVE-2021-3739

HistoryMar 10, 2022 - 5:43 p.m.

CVE-2021-3739

2022-03-1017:43:01

CWE-476

[email protected]

web.nvd.nist.gov

111

cve-2021-3739

null pointer dereference

btrfs_rm_device

linux kernel

cap_sys_admin

system crash

kernel information leakage

nvd

3.6 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:N/A:P

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

6.4 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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.

Affected configurations

Vulners

NVD

Node

linuxlinux_kernelRange≤5.15

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "kernel",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in v5.15-rc1 and above."
      }
    ]
  }
]