CVE-2026-93097: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: ed83f7ca398b3798b82c1d5d1113011c0e5a2198 преди 86771c105293ca26bfcc320b4f60d32c137b54aa; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 преди 42eab80981f4d2ac820e253e80ecf92f8cd91f69; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 преди 6ad491cef1a812cf7b53aa769cd8869516c47362; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 преди e77594e0cea67ab1c2317a27aa77a744e26ad6a6; ed83f7ca398b3798b82c1d5d1113011c0e5a2198 преди 8b301c4afbce4bc3f94528441d8d5ce1366504ad
• Linux Linux: 6.4; преди 6.4; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-93097
• https://nvd.nist.gov/vuln/detail/CVE-2026-93097
• https://git.kernel.org/stable/c/86771c105293ca26bfcc320b4f60d32c137b54aa
• https://git.kernel.org/stable/c/42eab80981f4d2ac820e253e80ecf92f8cd91f69
• https://git.kernel.org/stable/c/6ad491cef1a812cf7b53aa769cd8869516c47362
• https://git.kernel.org/stable/c/e77594e0cea67ab1c2317a27aa77a744e26ad6a6
• https://git.kernel.org/stable/c/8b301c4afbce4bc3f94528441d8d5ce1366504ad