PT-2026-37546 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-06-16 · CVE-2026-43206

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 out-of-bounds write exists in the kfd event page set() function. The function uses memset to write KFD SIGNAL EVENT LIMIT * 8 bytes without verifying the buffer size parameter. This allows unprivileged userspace to trigger an out-of-bounds kernel memory write by providing a small buffer, which could lead to privilege escalation.

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

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-43206

SUSE-SU-2026:22108-1

SUSE-SU-2026:2310-1

SUSE-SU-2026:2331-1

SUSE-SU-2026:2332-1

SUSE-SU-2026:2383-1

SUSE-SU-2026:2421-1

Affected Products

Linux Kernel

References · 242

• https://git.kernel.org/stable/c/4857c37c7ba9aa38b9a4c694e8bd8d0091c87940 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43206 · Vendor Advisory
• https://git.kernel.org/stable/c/8a70a26c9f34baea6c3199a9862ddaff4554a96d · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:2310-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43206 · Security Note
• https://git.kernel.org/stable/c/3e04bc310d80b46eaf481f1fefcbcb37a187412d · Patch
• https://osv.dev/vulnerability/SUSE-SU-2026:2421-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:2332-1 · Vendor Advisory
• https://git.kernel.org/stable/c/bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b · Patch
• https://ubuntu.com/security/CVE-2026-43206 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43206 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-43206 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43206 · Vendor Advisory
• https://git.kernel.org/stable/c/de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f · Patch
• https://cve.org/CVERecord?id=CVE-2026-43206 · Security Note