Linux Kernel up to 6.19.5 Kernel Memory kfd_event_page_set out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.19.5. This vulnerability affects the function kfd_event_page_set of the component Kernel Memory Handler. Executing a manipulation can lead to out-of-bounds write. This vulnerability appears as CVE-2026-43206. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.19.5 and classified as critical. This vulnerability affects the function kfd_event_page_set of the component Kernel Memory Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-43206 since 05/01/2026. The exploitation appears to be easy. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/07/2026).

The vulnerability scanner Nessus provides a plugin with the ID 312817 (Linux Distros Unpatched Vulnerability : CVE-2026-43206), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16 or 6.19.6 eliminates this vulnerability. Applying the patch 3e04bc310d80b46eaf481f1fefcbcb37a187412d/de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f/b4034442cb090e4a980bdcc1540948606cbc951b/4857c37c7ba9aa38b9a4c694e8bd8d0091c87940/75fb57efdd7863fffbc39db23e9cad7aafda26ed/bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b/4e72f419e4ed44cb3b60506752d8688c20a60a9b/8a70a26c9f34baea6c3199a9862ddaff4554a96d is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (312817). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 312817
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-43206

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.252/5.15.202/6.1.165/6.6.128/6.12.75/6.18.16/6.19.6
Patch: 3e04bc310d80b46eaf481f1fefcbcb37a187412d/de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f/b4034442cb090e4a980bdcc1540948606cbc951b/4857c37c7ba9aa38b9a4c694e8bd8d0091c87940/75fb57efdd7863fffbc39db23e9cad7aafda26ed/bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b/4e72f419e4ed44cb3b60506752d8688c20a60a9b/8a70a26c9f34baea6c3199a9862ddaff4554a96d

Timelineinfo

05/01/2026 CVE reserved
05/06/2026 +5 days Advisory disclosed
05/06/2026 +0 days VulDB entry created
05/07/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43206 (🔒)
GCVE (CVE): GCVE-0-2026-43206
GCVE (VulDB): GCVE-100-361408

Entryinfo

Created: 05/06/2026 16:33
Updated: 05/07/2026 17:34
Changes: 05/06/2026 16:33 (59), 05/07/2026 17:34 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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