Bug 2536614 (CVE-2026-92491) - CVE-2026-92491 kernel: firmware: arm_scmi: Roll back partial protocol table registration
Summary: CVE-2026-92491 kernel: firmware: arm_scmi: Roll back partial protocol table r...
Keywords:
Status: NEW
Alias: CVE-2026-92491
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 18:51 UTC by OSIDB Bzimport
Modified: 2026-10-20 11:16 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-17 18:51:43 UTC
In the Linux kernel, the following vulnerability has been resolved:

firmware: arm_scmi: Roll back partial protocol table registration

scmi_protocol_table_register() can leave earlier requests registered when
a later entry in the same ID table fails. Each request retains a pointer
to the driver's ID table, so a failed module load can leave a dangling
pointer after the module storage is released.

Unrequest only the successfully registered prefix, in reverse order,
before returning the failure. Leave the failed entry and the remaining
entries untouched because matching requests can be owned by another
driver.


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