CVE-2026-93097
CVE CVE-2026-93097EUVD EUVD-2026-82205Published 2026-09-17T16:11:11.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux ed83f7ca398b3798b82c1d5d1113011c0e5a2198 <e77594e0cea67ab1c2317a27aa77a744e26ad6a6; patch: 6.6.157; patch: 7.3-rc1; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 <42eab80981f4d2ac820e253e80ecf92f8cd91f69; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 <8b301c4afbce4bc3f94528441d8d5ce1366504ad; patch: 6.18.52; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 <86771c105293ca26bfcc320b4f60d32c137b54aa; 6.4; patch: 0; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 <6ad491cef1a812cf7b53aa769cd8869516c47362; patch: 6.12.110; patch: 7.2.6
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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