CVE-2026-93097

In the Linux kernel, the following vulnerability has been resolved: cxl/mbox: Break poison list loop on an empty payload A device that returns count == 0 with CXL_POISON_FLAG_MORE set on every iteration never advances nr_records, so the max_errors guard never trips and the do/while loops forever while holding poison.mutex. That hangs the sysfs-triggered scan thread and blocks all subsequent poison operations on the device. The existing "Protect against an uncleared _FLAG_MORE" guard was intended to bound a misbehaving device but does not cover the count == 0 case. Stop the loop on an empty payload so a malfunctioning or malicious device cannot wedge the poison scan.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/42eab80981f4d2ac820e253e80ecf92f8cd91f69
https://git.kernel.org/stable/c/6ad491cef1a812cf7b53aa769cd8869516c47362
https://git.kernel.org/stable/c/86771c105293ca26bfcc320b4f60d32c137b54aa
https://git.kernel.org/stable/c/8b301c4afbce4bc3f94528441d8d5ce1366504ad
https://git.kernel.org/stable/c/e77594e0cea67ab1c2317a27aa77a744e26ad6a6

Configurations

No configuration.

History

17 Sep 2026, 17:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:18

Updated : 2026-09-17 17:18

NVD link : CVE-2026-93097

Mitre link : CVE-2026-93097

CVE.ORG link : CVE-2026-93097

JSON object : View

Products Affected

No product.

CWE

No CWE.

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