Linux Kernel up to 7.2.6 accel-amdxdna buffer overflow

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.2.6 and classified as very critical. The affected element is an unknown function of the component accel-amdxdna. Executing a manipulation can lead to buffer overflow. This vulnerability appears as CVE-2026-98436. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Linux Kernel up to 7.2.6. This vulnerability affects an unknown code of the component accel-amdxdna. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Disable device buffer exporting Device buffers are never intended to be exported. Disable exporting support explicitly.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-98436 since 09/25/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are necessary for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/18/2026).

Upgrading to version 7.2.7 or 7.3-rc1 eliminates this vulnerability. Applying the patch 33b00fa8023e8ade3409aa9c833b8ce65b8c29eb/9480dd7ec3fcadd4217503e4bb32c16e19e4b21f is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 7.2.0
• 7.2.1
• 7.2.2
• 7.2.3
• 7.2.4
• 7.2.5
• 7.2.6

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

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

Discussion