CVE-2026-43431: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: xhci: Fix NULL pointer dereference when reading portli debugfs files Michal reported and debgged a NULL pointer dereference bug in the recently added portli debugfs files Oops is caused when there are more port registers counted in xhci->max_ports than ports reported by Supported Protocol capabilities. This is possible if max_ports is more than maximum port number, or if there are gaps between ports of different speeds the 'Supported Protocol' capabilities. In such cases port->rhub will be NULL so we can't reach xhci behind it. Add an explicit NULL check for this case, and print portli in hex without dereferencing port->rhub.

Засегнати продукти

• Linux Linux: 384c57ec720597f8104f69082cdd261abb998b80 преди 9c8bef223c6e991276188d30d74bdb2cbd8be652; 384c57ec720597f8104f69082cdd261abb998b80 преди ae4ff9dead5efa2025eddfcdb29411432bf40a7c
• Linux Linux: 6.19; преди 6.19; 6.19.9 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-43431
• https://nvd.nist.gov/vuln/detail/CVE-2026-43431
• https://git.kernel.org/stable/c/9c8bef223c6e991276188d30d74bdb2cbd8be652
• https://git.kernel.org/stable/c/ae4ff9dead5efa2025eddfcdb29411432bf40a7c