PT-2024-8908 · Linux+3 · Linux Kernel+3

Eric Dumazet · Published 2024-05-24 · Updated 2025-01-06 · CVE-2021-47514

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 netns refcount leak in the devlink nl cmd reload() function. This leak occurs because some error paths forget to release a refcount on a netns. The problem can be fixed by reducing the scope of the get net()/put net() section around the call to devlink reload(). This vulnerability may allow an attacker to gain access to confidential information.

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

Exploit

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BDU:2024-10575

CVE-2021-47514

OPENSUSE-SU-2024_2189-1

SUSE-SU-2024:2008-1

SUSE-SU-2024:2011-1

SUSE-SU-2024:2019-1

SUSE-SU-2024:2189-1

SUSE-SU-2024:2190-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 1247

• 🔥 https://github.com/lanleft/CVE-2023-1829 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47514 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2019-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-10575 · Security Note
• https://git.kernel.org/stable/c/fe30b70ca84da9c4aca85c03ad86e7a9b89c5ded · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2190-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47514 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47514 · Security Note
• https://git.kernel.org/stable/c/4b7e90672af8e0c78205db006f1b0a20ebd07f5f · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2008-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47514 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47514 · Security Note
• https://git.kernel.org/stable/c/4dbb0dad8e63fcd0b5a117c2861d2abe7ff5f186 · Patch
• https://osv.dev/vulnerability/CVE-2021-47514 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2189-1 · Vendor Advisory