PT-2024-11147 · Linux · Linux Kernel

Published 2021-03-13 · Updated 2024-11-06 · CVE-2021-47057

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 issue has been resolved in the Linux kernel, specifically in the crypto: sun8i-ss module. The issue occurs when the dma iv mapping fails, causing the return error path to leak the memory allocated to object d. This is fixed by adding a new error return label to ensure d is freed before the return. The issue is classified as a "Resource leak".

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

Allocation of Resources Without Limits

Weakness Enumeration

CWE-402

CWE-770

Related Identifiers

BDU:2025-07265

CVE-2021-47057

Affected Products

Linux Kernel

References · 23

• https://git.kernel.org/stable/c/e1f2d739849c3239df1ea3f97d40bade4b808410 · Patch
• https://git.kernel.org/stable/c/6516cb852d704ff8d615de1f93cd443a99736c3d · Patch
• https://git.kernel.org/stable/c/617ec35ed51f731a593ae7274228ef2cfc9cb781 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47057 · Vendor Advisory
• https://git.kernel.org/stable/c/98b5ef3e97b16eaeeedb936f8bda3594ff84a70e · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-47057 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47057 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-07265 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47057 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47057 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-47057 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47057 · Vendor Advisory
• https://twitter.com/CVEnew/status/1763333524872896751 · Twitter Post
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21 · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37 · Note