PT-2024-21631 · Linux+3 · Linux Kernel+3

Xuan Zhuo · Published 2024-03-19 · Updated 2024-07-04 · CVE-2024-27066

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 an unmap leak for indirect desc tables in the virtio packed functionality. When use dma api and premapped are true, do unmap is false, which prevents vring unmap extra packed from being called by detach buf packed. This results in the indirect desc table not being unmapped, causing an unmap leak. The fix involves checking vq->use dma api instead and synchronously updating dma info based on the use dma api judgment.

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

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2026-03510

CVE-2024-27066

USN-6816-1

USN-6817-1

USN-6817-2

USN-6817-3

USN-6878-1

Affected Products

Astra Linux

Linuxmint

Linux Kernel

Ubuntu

References · 253

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27066.json · Exploit
• https://ubuntu.com/security/CVE-2024-27048 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-52644 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26899 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27068 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26938 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-27066 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-27043 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26814 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35797 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35805 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-35811 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26954 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26968 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-26973 · Vendor Advisory