PT-2026-37619 · Linux+1 · Linux Kernel+1

CVE-2026-43279 · Published 2026-05-06 · Updated 2026-07-13

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 An issue exists in the ALSA usb-audio component where the system blindly assumes received packets fit the buffer size when silencing playback URB (USB Request Block) packets in implicit fb mode. If the capture stream setup differs from the playback stream, such as due to USB core max packet size limitations, it can lead to out-of-bounds (OOB) writes to the buffer, resulting in a kernel crash.

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

Exploit

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALSA-2026:27353

ALSA-2026:27354

ALSA-2026:27789

ALSA-2026:33685

CVE-2026-43279

RHSA-2026:33685

RHSA-2026:33900

RHSA-2026:34095

SUSE-SU-2026:2914-1

USN-8492-1

USN-8492-2

USN-8492-3

USN-8492-4

USN-8492-5

USN-8497-1

USN-8498-1

USN-8499-1

Affected Products

Linux Kernel

Rocky Linux

References · 752

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43279.json · Exploit
• https://ubuntu.com/security/CVE-2026-45893 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71190 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23097 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43279 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46333 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43077 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23235 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43383 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8492-5 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-71305 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23088 · Vendor Advisory
• https://git.kernel.org/stable/c/780dc57794a217b49994fa1d0b42465fb10a00aa · Patch
• https://ubuntu.com/security/notices/USN-8492-3 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43283 · Vendor Advisory