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CVE-2025-71109: Linux

7.1

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: MIPS: ftrace: Fix memory corruption when kernel is located beyond 32 bits Since commit e424054000878 ("MIPS: Tracing: Reduce the overhead of dynamic Function Tracer"), the macro UASM_i_LA_mostly has been used, and this macro can generate more than 2 instructions. At the same time, the code in ftrace assumes that no more than 2 instructions can be generated, which is why it stores them in an int[2] array. However, as previously noted, the macro UASM_i_LA_mostly (and now UASM_i_LA) causes a buffer overflow when _mcount is beyond 32 bits. This leads to corruption of the variables located in the __read_mostly section. This corruption was observed because the variable __cpu_primary_thread_mask was corrupted, causing a hang very early during boot. This fix prevents the corruption by avoiding the generation of instructions if they could exceed 2 instructions in length. Fortunately, insn_la_mcount is only used if the instrumented code is located outside the kernel code section, so dynamic ftrace can still be used, albeit in a more limited scope. This is still preferable to corrupting memory and/or crashing the kernel.

    Засегнати продукти

    • Linux Linux: e424054000878d7eb11e44289242886d6e219d22 преди 3f7a003fe2646337fbc5dd41051ad6754ac34064; e424054000878d7eb11e44289242886d6e219d22 преди 9cfda98cf02eacfa6b09076e98bd479fd73407c2; e424054000878d7eb11e44289242886d6e219d22 преди e3e33ac2eb69d595079a1a1e444c2fb98efdd42d; e424054000878d7eb11e44289242886d6e219d22 преди 7f39b9d0e86ed6236b9a5fb67616ab1f76c4f150; e424054000878d7eb11e44289242886d6e219d22 преди 36dac9a3dda1f2bae343191bc16b910c603cac25
    • Linux Linux: 2.6.35; преди 2.6.35; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.64 до 6.12.*; 6.18.3 до 6.18.*; от 6.19 нататък

    История

    • 14 януари 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2025-71109: Linux | freedomonline.bg