What’s Vulnerable › Vulnerabilities

CVE-2026-43206: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-10-19
• Weakness: CWE-787

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.

Affected products

• Linux kernel: from 4.17 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.16, 6.19.6

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

References

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

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