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CVE-2026-74424: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: fbcon: fix NULL pointer dereference for a console without vc_data fbcon_new_modelist() runs when a framebuffer's modelist changes. For each console mapped to it with fb_display[i].mode set, it reads vc_cons[i].d and passes the vc_num to fbcon_set_disp(). This assumes a console with a mode set has a vc_data, but it can be NULL. fbcon_set_disp() sets fb_display[i].mode before it checks vc_data, and fbcon_deinit() leaves the mode set after the vc_data is freed. fbcon_new_modelist() then dereferences the NULL vc_data. Keep fb_display[i].mode set only while the console has a vc_data. Check vc_data before setting the mode in fbcon_set_disp(), and clear the mode in fbcon_deinit(). The existing mode check in fbcon_new_modelist() then skips such consoles.

    Засегнати продукти

    • Linux Linux: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e преди 8e9b8b008f4036df0318870c5d754134ff1b94cc; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e преди cc4382dc5134826a3936a6b08de17f7dc7abe232; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e преди 9b783b7e03dc78ec102edf618259a2b55911fc6a; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e преди ac970358c5ca0775841bd2a56ce15dc464b99003; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e преди 6617df8c246311c82cebf061a4cee55b9df60922; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e преди b134ad2f7c06b3c1098dcc95008e2045ff4b49b2; d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e преди 5fae9a928482d4845bca169a3a098789203a1ca4
    • Linux Linux: 2.6.23; преди 2.6.23; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *

    История

    • 15 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-74424: Linux | freedomonline.bg