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CVE-2026-97905: Linux

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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: cpufreq: zero-initialize policy cpumask before sysfs publication cpufreq_policy_alloc() allocates policy->cpus with alloc_cpumask_var(), i.e. without __GFP_ZERO, unlike the sibling related_cpus and real_cpus masks. With CONFIG_CPUMASK_OFFSTACK=y the mask is a separate kmalloc_node() allocation, so its bitmap holds whatever the slab allocator left behind: cpufreq_online() cpufreq_policy_alloc() alloc_cpumask_var(&policy->cpus) /* bitmap is uninitialized */ kobject_init_and_add() /* policy%u/ appears in sysfs */ cpufreq_policy_online() cpumask_copy(policy->cpus, cpumask_of(cpu)) /* first valid value */ This leaves a window in which the sysfs attributes are already reachable while policy->cpus is still garbage. show()/store() gate on policy_is_inactive(), i.e. cpumask_empty(policy->cpus), so a non-zero bitmap makes them run the attribute callbacks on a policy that is not initialized yet. Fix this by using zalloc_cpumask_var() for policy->cpus.

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    • Linux Linux: 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди e13370c5b549712f49f80234df249303381c53b4; 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди e807920031ca32b668f9e7a1efbd21858f03d64b; 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди ca52482508b3ac9febe74ca4f732647d394727b8; 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди 06f273d29e5e0fe5c775a65c563fbeed8cd94c7a; 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди 0de2f3918fbbbb767e7e716178194b66560dd12a; 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди 6e166b9281dec98aed19213a84235250e5fdb081; 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди bbc0472d2270bf732142ca71579d6ede636174ed; 2fc3384dc75bf7333384c7a16d12c796f61c3f56 преди 54d37bcf2f497140b9207968557ddb484058e749
    • Linux Linux: 4.2; преди 4.2; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; 7.3 до *

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-97905: Linux | freedomonline.bg