CVE-2021-4150

Published: Mar 23, 2022Modified: Jun 17, 2026

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: NVD

Description

A use-after-free flaw was found in the add_partition in block/partitions/core.c in the Linux kernel. A local attacker with user privileges could cause a denial of service on the system. The issue results from the lack of code cleanup when device_add call fails when adding a partition to the disk.

Affected (8)

Products: Linux: Linux Kernel

1 product

Configuration A

8 vulnerable

Vulnerable Software	Affected Versions
Linux Linux Kernel	Before 5.15
Linux Linux Kernel	Version 5.15
Linux Linux Kernel	Version 5.15 rc1
Linux Linux Kernel	Version 5.15 rc2
Linux Linux Kernel	Version 5.15 rc3
Linux Linux Kernel	Version 5.15 rc4
Linux Linux Kernel	Version 5.15 rc5
Linux Linux Kernel	Version 5.15 rc6

Related CWEs

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (6)

https://bugzilla.redhat.com/show_bug.cgi?id=2025938

Source: secalert@redhat.com

Issue TrackingThird Party Advisory

https://lkml.org/lkml/2021/10/18/485

Source: secalert@redhat.com

ExploitThird Party Advisory

https://lkml.org/lkml/2021/9/6/781

Source: secalert@redhat.com

ExploitThird Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2025938

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingThird Party Advisory

https://lkml.org/lkml/2021/10/18/485

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://lkml.org/lkml/2021/9/6/781

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

Timeline

No history available yet.