CVE-2026-80579: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: fbdev: clear fb_info->mode before deleting a videomode fb_set_var() can delete a mode from info->modelist when userspace passes FB_ACTIVATE_INV_MODE through FBIOPUT_VSCREENINFO. The code checks that the mode being deleted is not the current info->var and that fbcon is not using it, but it does not check fb_info->mode. fb_info->mode may still point into the modelist entry being deleted. If the entry is freed, later mode sysfs reads through show_mode() can dereference a stale pointer. Clear fb_info->mode before calling fb_delete_videomode() when it matches the mode being removed.

Засегнати продукти

• Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди ce7fef961c63229b22dec415fb988899f479d61f; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 95e647d2a5304a8fd11f1ba3c8502de700650131
• Linux Linux: 2.6.12; преди 2.6.12; 7.1.10 до 7.1.*; 7.2 до *

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-2026-80579
• https://nvd.nist.gov/vuln/detail/CVE-2026-80579
• https://git.kernel.org/stable/c/ce7fef961c63229b22dec415fb988899f479d61f
• https://git.kernel.org/stable/c/95e647d2a5304a8fd11f1ba3c8502de700650131