PT-2024-37017 · Linux · Linux Kernel

Published 2024-10-31 · Updated 2025-01-01 · CVE-2024-56706

Positive Technologies (AI Summary)

CVSS v3.1

6.3

Medium

Base vector

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

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

Description A memory allocation issue has been resolved in the Linux kernel. The problem occurs in the s390/cpum sf module, where the memory allocation for Sample Data Blocks (SDBs) is not properly protected by a mutex. This can lead to multiple allocations of SDBs for the same PMU when two or more concurrent invocations of perf event init() run in parallel. The issue is related to the allocation of memory required for PMUs after the reservation of the PMU hardware, which is done outside of the mutex protection.

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

Exploit

Out of bounds Read

Race Condition

Weakness Enumeration

CWE-125

CWE-362

Related Identifiers

BDU:2026-04477

CVE-2024-56706

Affected Products

Linux Kernel

References · 20

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56706.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-56706 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2025-20480.html · Vendor Advisory
• https://git.kernel.org/stable/c/4b3bdfa89635db6a53e02955548bd07bebcae233 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-56706 · Security Note
• https://osv.dev/vulnerability/CVE-2024-56706 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-56706 · Security Note
• https://bdu.fstec.ru/vul/2026-04477 · Security Note
• https://git.kernel.org/stable/c/f55bd479d8663a4a4e403b3d308d3d1aa33d92df · Patch
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2024-56706 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-56706 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2024-56706 · Note
• https://lore.kernel.org/linux-cve-announce/2024122838-CVE-2024-56706-d292@gregkh · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.2 · Note