CVE-2026-64327: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_fs: Initialize epfile->in early to fix endpoint direction checks When parsing endpoint descriptors, ffs_data_got_descs() generates the eps_addrmap which contains the endpoint direction. However, epfile->in was previously only populated in ffs_func_eps_enable() which executes upon USB host connection. As a result, early userspace ioctls like FUNCTIONFS_DMABUF_ATTACH that run before the host connects would see epfile->in as 0, leading to incorrect DMA directions. By moving the initialization to ffs_epfiles_create(), epfile->in is accurate before userspace opens the endpoint files.

Засегнати продукти

• Linux Linux: 7b07a2a7ca02a20124b552be96c5a56910795488 преди 82cf1142e5ccf2b6d6d22ef713aaf3e5f2b5716b; 7b07a2a7ca02a20124b552be96c5a56910795488 преди 9e04055ab5fc0470a0031ee6934739f9aa8f34a5; 7b07a2a7ca02a20124b552be96c5a56910795488 преди f99f32ea9aa976afcbec20647ed33b50a52002c1; 7b07a2a7ca02a20124b552be96c5a56910795488 преди 82cfd4739011bdc7e87b5d585703427e89ddfaa5
• Linux Linux: 6.9; преди 6.9; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 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-2026-64327
• https://nvd.nist.gov/vuln/detail/CVE-2026-64327
• https://git.kernel.org/stable/c/82cf1142e5ccf2b6d6d22ef713aaf3e5f2b5716b
• https://git.kernel.org/stable/c/9e04055ab5fc0470a0031ee6934739f9aa8f34a5
• https://git.kernel.org/stable/c/f99f32ea9aa976afcbec20647ed33b50a52002c1
• https://git.kernel.org/stable/c/82cfd4739011bdc7e87b5d585703427e89ddfaa5