PT-2024-9284 · Linux+2 · Linux Kernel+2

Published 2024-06-19 · Updated 2024-12-04 · CVE-2021-47616

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description: The issue is related to a use-after-free bug in the RDMA component of the Linux kernel. This bug occurs when the qp->sq.queue is freed in the error handling path of rxe qp from init(), and then rxe create qp() drops the last reference to this object, causing the queue cleanup function to attempt to free the queue again. This can be exploited to potentially elevate privileges in the system.

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

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2024-10972

CVE-2021-47616

OPENSUSE-SU-2024_2372-1

OPENSUSE-SU-2024_2394-1

SUSE-SU-2024:2372-1

SUSE-SU-2024:2394-1

SUSE-SU-2024:2902-1

SUSE-SU-2024:2929-1

SUSE-SU-2024:2939-1

Affected Products

Linux Kernel

Red Os

Suse

References · 1201

• https://osv.dev/vulnerability/SUSE-SU-2024:2929-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2394-1 · Vendor Advisory
• https://git.kernel.org/stable/c/84b01721e8042cdd1e8ffeb648844a09cd4213e0 · Patch
• https://git.kernel.org/stable/c/acb53e47db1fbc7cd37ab10b46388f045a76e383 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2939-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47616 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47616 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47616 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2372-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47616 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47616 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-10972 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47616 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2902-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47616 · Security Note