Bug 2507068 (CVE-2026-64272)

Summary: CVE-2026-64272 kernel: Input: mms114 - fix touch indexing for MMS134S and MMS136
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `mms114` touch screen driver. The driver misinterprets the size of touch event data, causing it to read information from incorrect memory locations. This issue, known as an out-of-bounds read, could be exploited by a local attacker to disrupt system operations or potentially access sensitive data, leading to a denial of service or information disclosure.
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Description OSIDB Bzimport 2026-07-25 10:03:19 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Input: mms114 - fix touch indexing for MMS134S and MMS136

The MMS134S and MMS136 touch controllers have an event size of 6 bytes
rather than 8 bytes. When __mms114_read_reg() reads the touch data
packet from the device into the touch buffer, the events are packed
tightly at 6-byte intervals. However, the driver iterates through the
events using standard C array indexing (touch[index]), where each
element is sizeof(struct mms114_touch) (8 bytes) apart. As a result, any
touch events beyond the first one are read from incorrect offsets and
parsed improperly.

Fix this by explicitly calculating the byte offset for each touch event
based on the device's specific event size.
Comment 1 TEJ RATHI 2026-07-30 06:19:56 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026072500-CVE-2026-64272-8d9f@gregkh/T