CVE-2021-3739

high

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1997958

https://github.com/torvalds/linux/commit/e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091

https://security.netapp.com/advisory/ntap-20220407-0006/

https://ubuntu.com/security/CVE-2021-3739

https://www.openwall.com/lists/oss-security/2021/08/25/3

Details

Source: Mitre, NVD

Published: 2022-03-10

Risk Information

CVSS v2

Base Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:P

Severity: Low

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High