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CVE-2026-99163: Linux

7.8

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: tracing/histograms: Reject non-stacktrace fields for synthetic stacktrace fields In check_synth_field(), when a synthetic event field is a stacktrace (field->is_stack) and the histogram field is not a "long[" stacktrace array, validation falls through to the generic size and signedness comparison. Because parse_synth_field() sets a stacktrace field's type to "__data_loc unsigned long[]", its size is sizeof(u64) and synth_field_signed() marks it as signed. Consequently, any 8-byte signed scalar histogram field passes the fallback check, and its scalar value is subsequently dereferenced as a kernel stacktrace pointer in get_field_size() and trace_stack(). Furthermore, checking strstr(hist_field->type, "long[") is insufficient because tracepoint fields defined with __bitmask() or __rel_bitmask() also have type "__data_loc unsigned long[]" or "__rel_loc unsigned long[]", whilst create_hist_field() treats them as 4-byte scalar values without HIST_FIELD_FL_STACKTRACE. Propagate HIST_FIELD_FL_STACKTRACE to variable references and field variables (whilst excluding variable aliases from per-element stacktrace capture), and reject any mismatch between HIST_FIELD_FL_STACKTRACE and field->is_stack in check_synth_field().

    Засегнати продукти

    • Linux Linux: b9453380c1c542fd095a4dbe9251eeba4022bbce преди eba0a6365a0f38f7598a02fc7f9ee341c7efe7f5; 5f52389bdd9eafb63b3a2f804e02aeb17b6a5f55 преди 326c45c9e201e3ff4c9e9e0e14c2c91364d6c8be; f3baa42afeea0d5f04ad31525e861199d02210cc преди 6c4e4946febb585d2fc93a02a0cd12cec715bb32; 00cf3d672a9dd409418647e9f98784c339c3ff63 преди 7e0d05a6234a984ac23b8a563fb7f66f2572b668; 00cf3d672a9dd409418647e9f98784c339c3ff63 преди 648687f2b448d8527cd7b112fe5d4bd0fec85a87; 00cf3d672a9dd409418647e9f98784c339c3ff63 преди 1f36e4ddd05d540f363dbaa4c23042549f15b3ef; 00cf3d672a9dd409418647e9f98784c339c3ff63 преди deb336ae7c7b341591a6862cf6fcfeca97c77dfd; 00cf3d672a9dd409418647e9f98784c339c3ff63 преди a244c241593b5b38a08f0df2cb43c26574efbdcb; 5.10.237 преди 5.10.273; 5.15.124 преди 5.15.224; 6.1.43 преди 6.1.191
    • Linux Linux: 6.3; преди 6.3; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.161 до 6.6.*; 6.12.115 до 6.12.*; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; 7.3 до *

    История

    • 28 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-99163: Linux | freedomonline.bg