Bug 2559557 (CVE-2026-98893) - CVE-2026-98893 kernel: firmware: arm_scmi: Validate SENSOR_UPDATE payload size
Summary: CVE-2026-98893 kernel: firmware: arm_scmi: Validate SENSOR_UPDATE payload size
Keywords:
Status: NEW
Alias: CVE-2026-98893
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-23 11:56 UTC by OSIDB Bzimport
Modified: 2026-10-26 14:23 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-10-23 11:56:55 UTC
In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_scmi: Validate SENSOR_UPDATE payload size

SENSOR_UPDATE carries one or more sensor readings after the fixed
notification header. The parser derives the expected reading count
from the sensor description, but it did not verify that the received
payload contains those entries before parsing them.

Reject truncated update notifications before reading the variable
array.


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