PT-2024-9081 · Linux+3 · Linux Kernel+3

Published 2024-05-24 · Updated 2024-11-26 · CVE-2021-47539

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: The issue is related to a leak in the rxrpc look up bundle() function, where a reference to rxrpc peer is held. This leak can potentially allow an attacker to access confidential information. The problem arises because rxrpc put peer() is not called for the bundle candidate before kfree(), resulting in the leak.

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

Information Disclosure

Memory Leak

Weakness Enumeration

CWE-200

CWE-401

Related Identifiers

BDU:2024-10763

CVE-2021-47539

OPENSUSE-SU-2024_2372-1

OPENSUSE-SU-2024_2394-1

SUSE-SU-2024:2372-1

SUSE-SU-2024:2394-1

SUSE-SU-2024:2939-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 1178

• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47539 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47539 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47539 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47539 · Vendor Advisory
• https://git.kernel.org/stable/c/bc97458620e38961af9505cc060ad4cf5c9e4af7 · Patch
• https://git.kernel.org/stable/c/ca77fba821351190777b236ce749d7c4d353102e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47539 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2394-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47539 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2939-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47539 · Vendor Advisory
• https://git.kernel.org/stable/c/35b40f724c4ef0f683d94dab3af9ab38261d782b · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2372-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-10763 · Security Note
• https://bugzilla.suse.com/1226675 · Note