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CVE-2026-68435: 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: LoongArch: Fix address space mismatch in kexec command line lookup When searching the loaded segments for the "kexec" command line marker, the kexec_load(2) path (file_mode == 0) passes the user-space segment buffer straight to strncmp() through a bogus (char __user *) cast. This dereferences a user pointer in kernel context, which is wrong and is flagged by sparse: arch/loongarch/kernel/machine_kexec.c:84:51: sparse: incorrect type in argument 2 (different address spaces) @@ expected char const * @@ got char [noderef] __user * Here copy the marker-sized prefix of each segment into a small on-stack buffer with copy_from_user() before comparing, and skip segments that fault. The subsequent copy_from_user() that stages the full command line into the safe area is left unchanged.

    Засегнати продукти

    • Linux Linux: 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 преди 742f2c0a64a7557495e831c3c112d92e308bd4ae; 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 преди 3b71f51fa3a247921408879eab2ddee82da8a980; 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 преди eaa908d8d523b0ab75dab5ebd6662e70af5e5d7e; 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 преди a94d6726ec8680a2b0c453fc782a543f68a1ea06; 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 преди 7a54e0cbaad4a5a09e7cc7a4f05d181048e98ca7; 4a03b2ac06a5bcae29371866d9d11f5bfd4c9188 преди 485ed44db5694d8d2e5027f63ad608e705286f30
    • Linux Linux: 6.1; преди 6.1; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.114 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

    История

    • 12 август 2026 Публикувано

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    CVE-2026-68435: Linux | freedomonline.bg