Linux Kernel up to 7.2.10 th1520-dw-hdmi th1520-dw-hdmi.c th1520_dw_hdmi_remove memory corruption

Summaryinfo

A vulnerability identified as very critical has been detected in Linux Kernel up to 7.2.10. Affected is the function th1520_dw_hdmi_remove of the file th1520-dw-hdmi.c of the component th1520-dw-hdmi. This manipulation causes memory corruption. This vulnerability is registered as CVE-2026-98998. The attack needs to be launched locally. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 7.2.10 and classified as very critical. Affected by this vulnerability is the function th1520_dw_hdmi_remove of the file th1520-dw-hdmi.c of the component th1520-dw-hdmi. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: th1520-dw-hdmi: Fix remove() callback This driver stores struct th1520_hdmi * in platform drvdata, but th1520_dw_hdmi_remove() was reading it back as struct dw_hdmi * and passing it to dw_hdmi_remove(), so teardown runs on the wrong pointer. Retrieve struct th1520_hdmi * from platform drvdata and pass hdmi->dw_hdmi to dw_hdmi_remove().

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-98998 since 09/25/2026. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation requires an enhanced level of successful authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/23/2026).

Upgrading to version 7.2.11 eliminates this vulnerability. Applying the patch d7cd43c2f546170ed42b2498d13805f4f89193c1 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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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
• 7.2.7
• 7.2.8
• 7.2.9
• 7.2.10

License

• open-source

Website

• Vendor: https://www.kernel.org/

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