PT-2024-11491 · Linux+2 · Linux Kernel+2

Dan Carpenter · Published 2021-11-09 · Updated 2024-08-19 · CVE-2021-47570

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A memory leak has been resolved in the Linux kernel, specifically in the r8188eu staging driver. The issue was fixed by freeing the ptmp variable before returning an error code -EINVAL in the rtw wx read32() function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Resource Exhaustion

Memory Leak

Weakness Enumeration

CWE-400

CWE-401

Related Identifiers

BDU:2025-04457

CVE-2021-47570

Affected Products

Astra Linux

Linux Kernel

Red Os

References · 14

• https://git.kernel.org/stable/c/be4ea8f383551b9dae11b8dfff1f38b3b5436e9a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47570 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47570 · Vendor Advisory
• https://git.kernel.org/stable/c/c8d3775745adacf9784a7a80a82d047051752573 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47570 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-04457 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47570 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47570 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47570 · Security Note
• https://ubuntu.com/security/CVE-2021-47570 · Vendor Advisory
• https://git.kernel.org/linus/be4ea8f383551b9dae11b8dfff1f38b3b5436e9a · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.6 · Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-kernel-lt-19-08-24 · Note
• https://lore.kernel.org/linux-cve-announce/2024052454-CVE-2021-47570-573d@gregkh · Note