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CVE-2026-64467: Linux

8.8

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: rust_binder: use a u64 stride when cleaning up the offsets array Allocation's Drop walks the offsets array (binder_size_t = u64 entries), cleaning up the objects, but it used usize instead of u64 for both the stride and the per-entry read. On 64-bit kernels (usize == u64) this is harmless, but on 32-bit kernels it walks the 8-byte entries in 4-byte steps, iterating an N-entry array 2N times, and reads the always-zero high word as offset 0, cleaning up the object at offset 0 N extra times. As a result the referenced node or handle ends up with a lower reference count than it actually has (a refcount over-decrement), and binder's reference accounting is corrupted; for example, the owner can be notified of a strong reference release (BR_RELEASE) even though references still remain. Change the stride to u64, and read each entry as a u64, narrowing it to usize with try_into(). On 32-bit ARM, when this over-decrement would drive a count below zero, the driver's existing refcount guard refuses it and fires: rust_binder: Failure: refcount underflow!

    Засегнати продукти

    • Linux Linux: eafedbc7c050c44744fbdf80bdf3315e860b7513 преди 89b8cc948dce661af87527623b3a41cdd115e2f9; eafedbc7c050c44744fbdf80bdf3315e860b7513 преди 74920b1b4e474ba7a4de4323c0458deec49d210b; eafedbc7c050c44744fbdf80bdf3315e860b7513 преди 803c8a9502e9b97cd6ae937618ef4a8fd6274343
    • Linux Linux: 6.18; преди 6.18; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; 7.2 до *

    История

    • 25 юли 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-64467: Linux | freedomonline.bg