PT-2021-5663 · Linux+3 · Linux Kernel+3

Published 2021-12-14 · Updated 2023-08-14 · CVE-2021-45480

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 versions prior to 5.15.11

Description The issue is related to a memory leak in the rds conn create() function in net/rds/connection.c. This memory leak can occur under certain circumstances. The exploitation of this issue may allow an attacker to cause a denial of service.

Recommendations For Linux kernel versions prior to 5.15.11, update to version 5.15.11 or later to resolve the issue. As a temporary workaround, consider restricting access to the rds conn create() function in net/rds/connection.c to minimize the risk of exploitation.

Fix

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALT-PU-2021-3610

ALT-PU-2021-3644

ALT-PU-2021-3660

ALT-PU-2022-1015

ALT-PU-2022-1016

ALT-PU-2022-1240

ALT-PU-2022-1419

ALT-PU-2022-1421

ALT-PU-2023-1814

ALT-PU-2023-4894

AZL-41801

AZL-7097

BDU:2022-00102

CVE-2021-45480

DLA-2941-1

DSA-5050-1

DSA-5096-1

MGASA-2021-0588

MGASA-2021-0589

USN-5278-1

USN-5337-1

USN-5338-1

USN-5368-1

USN-5377-1

Affected Products

Alt Linux

Linuxmint

Linux Kernel

Ubuntu

References · 78

• https://github.com/torvalds/linux/commit/5f9562ebe710c307adc5f666bf1a2162ee7977c0 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-4155 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-1055 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5377-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-39698 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-28713 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-45480 · Security Note
• https://ubuntu.com/security/CVE-2022-0742 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-28714 · Vendor Advisory
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-39685 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-43975 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5096-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-45480 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-23222 · Vendor Advisory