CVE - CVE-2025-21871

CVE-ID
CVE-2025-21871	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: tee: optee: Fix supplicant wait loop OP-TEE supplicant is a user-space daemon and it's possible for it be hung or crashed or killed in the middle of processing an OP-TEE RPC call. It becomes more complicated when there is incorrect shutdown ordering of the supplicant process vs the OP-TEE client application which can eventually lead to system hang-up waiting for the closure of the client application. Allow the client process waiting in kernel for supplicant response to be killed rather than indefinitely waiting in an unkillable state. Also, a normal uninterruptible wait should not have resulted in the hung-task watchdog getting triggered, but the endless loop would. This fixes issues observed during system reboot/shutdown when supplicant got hung for some reason or gets crashed/killed which lead to client getting hung in an unkillable state. It in turn lead to system being in hung up state requiring hard power off/on to recover.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0180cf0373f84fff61b16f8c062553a13dd7cfca URL:https://git.kernel.org/stable/c/0180cf0373f84fff61b16f8c062553a13dd7cfca MISC:https://git.kernel.org/stable/c/21234efe2a8474a6d2d01ea9573319de7858ce44 URL:https://git.kernel.org/stable/c/21234efe2a8474a6d2d01ea9573319de7858ce44 MISC:https://git.kernel.org/stable/c/3eb4911364c764572e9db4ab900a57689a54e8ce URL:https://git.kernel.org/stable/c/3eb4911364c764572e9db4ab900a57689a54e8ce MISC:https://git.kernel.org/stable/c/70b0d6b0a199c5a3ee6c72f5e61681ed6f759612 URL:https://git.kernel.org/stable/c/70b0d6b0a199c5a3ee6c72f5e61681ed6f759612 MISC:https://git.kernel.org/stable/c/c0a9a948159153be145f9471435695373904ee6d URL:https://git.kernel.org/stable/c/c0a9a948159153be145f9471435695373904ee6d MISC:https://git.kernel.org/stable/c/d61cc1a435e6894bfb0dd3370c6f765d2d12825d URL:https://git.kernel.org/stable/c/d61cc1a435e6894bfb0dd3370c6f765d2d12825d MISC:https://git.kernel.org/stable/c/ec18520f5edc20a00c34a8c9fdd6507c355e880f URL:https://git.kernel.org/stable/c/ec18520f5edc20a00c34a8c9fdd6507c355e880f MISC:https://git.kernel.org/stable/c/fd9d2d6124c293e40797a080adf8a9c237efd8b8 URL:https://git.kernel.org/stable/c/fd9d2d6124c293e40797a080adf8a9c237efd8b8
Assigning CNA
kernel.org
Date Record Created
20241229	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241229)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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