Bug 2484493 (CVE-2026-45702) - CVE-2026-45702 optee-os: OP-TEE OS: Denial of Service via type confusion in FFA_MEM_SHARE request processing
Summary: CVE-2026-45702 optee-os: OP-TEE OS: Denial of Service via type confusion in F...
Keywords:
Status: NEW
Alias: CVE-2026-45702
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: 2484503
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-03 19:01 UTC by OSIDB Bzimport
Modified: 2026-06-03 19:23 UTC (History)
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Description OSIDB Bzimport 2026-06-03 19:01:36 UTC 
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.3.0 and prior to version 4.11.0, a type confusion vulnerability exists in OP-TEE OS when processing an FFA_MEM_SHARE request from the normal world. This only applies when OP-TEE is configured as an SPMC for S-EL0 SPs, that is, with `CFG_CORE_SEL1_SPMC=y` and `CFG_SECURE_PARTITION=y`. Version 4.11.0 fixes the issue.
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