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Vulnerability record · CVE-2026-43206 · published 6 May 2026

CVE-2026-43206: Linux kernel out-of-bounds write vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() The kfd_event_page_set() function writes KFD_SIGNAL_EVENT_LIMIT * 8 bytes via memset without checking the buffer size parameter. This allows unprivileged userspace to trigger an out-of bounds kernel memory write by passing a small buffer, leading to potential privilege escalation.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.6% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() The kfd_event_page_set() function writes KFD_SIGNAL_EVENT_LIMIT * 8 bytes via memset without checking the buffer size parameter. This allows unprivileged userspace to trigger an out-of bounds kernel memory write by passing a small buffer, leading to potential privilege escalation.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/3e04bc310d80b46eaf481f1fefcbcb37a187412d Patch
https://git.kernel.org/stable/c/4857c37c7ba9aa38b9a4c694e8bd8d0091c87940 Patch
https://git.kernel.org/stable/c/4e72f419e4ed44cb3b60506752d8688c20a60a9b Patch
https://git.kernel.org/stable/c/75fb57efdd7863fffbc39db23e9cad7aafda26ed Patch
https://git.kernel.org/stable/c/8a70a26c9f34baea6c3199a9862ddaff4554a96d Patch
https://git.kernel.org/stable/c/b4034442cb090e4a980bdcc1540948606cbc951b Patch
https://git.kernel.org/stable/c/bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b Patch
https://git.kernel.org/stable/c/de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f Patch

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Source: NIST National Vulnerability Database (record CVE-2026-43206), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.