CVE-2021-47332

MEDIUM

Linux Kernel < 5.4.134 - NULL Pointer Dereference in ALSA usx2y free_pages_exact()

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: usx2y: Don't call free_pages_exact() with NULL address Unlike some other functions, we can't pass NULL pointer to free_pages_exact(). Add a proper NULL check for avoiding possible Oops.

References (5)

Core 5

Core References

Patch

https://git.kernel.org/stable/c/88262229b778f4f7a896da828d966f94dcb35d19

Patch

https://git.kernel.org/stable/c/7d7f30cf182e55023fa8fde4c084b2d37c6be69d

Patch

https://git.kernel.org/stable/c/bee295f5e03510252d18b25cc1d26230256eb87a

Patch

https://git.kernel.org/stable/c/82e5ee742fdd8874fe996181b87fafe1eb5f1196

Patch

https://git.kernel.org/stable/c/cae0cf651adccee2c3f376e78f30fbd788d0829f

Scores

CVSS v3 5.5

EPSS 0.0024

EPSS Percentile 14.8%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (13)

Linux/Linux < 5.2

Linux/Linux 36b8defc447627c3e91058c43941ec15d827556e - 7d7f30cf182e55023fa8fde4c084b2d37c6be69d

Linux/Linux 36b8defc447627c3e91058c43941ec15d827556e - 82e5ee742fdd8874fe996181b87fafe1eb5f1196

Linux/Linux 36b8defc447627c3e91058c43941ec15d827556e - 88262229b778f4f7a896da828d966f94dcb35d19

Linux/Linux 36b8defc447627c3e91058c43941ec15d827556e - bee295f5e03510252d18b25cc1d26230256eb87a

Linux/Linux 36b8defc447627c3e91058c43941ec15d827556e - cae0cf651adccee2c3f376e78f30fbd788d0829f

Linux/Linux 5.10.52 - 5.10.*

Linux/Linux 5.12.19 - 5.12.*

Linux/Linux 5.13.4 - 5.13.*

Linux/Linux 5.14

... and 3 more

Published May 21, 2024

Tracked Since Feb 18, 2026