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CVE-2026-53247: Linux

9.8

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 по мрежата, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown mtk_free_dev() calls metadata_dst_free() which frees the metadata_dst with kfree() immediately, bypassing the RCU grace period. In the RX path, skb_dst_set_noref() sets a non-refcounted pointer from the skb to the metadata_dst. This function requires RCU read-side protection and the dst must remain valid until all RCU readers complete. Since metadata_dst_free() calls kfree() directly, a use-after-free can occur if any skb still holds a noref pointer to the dst when the driver tears it down. Replace metadata_dst_free() with dst_release() which properly goes through the refcount path: when the refcount drops to zero, it schedules the actual free via call_rcu_hurry(), ensuring all RCU readers have completed before the memory is freed.

    Засегнати продукти

    • Linux Linux: 2d7605a729062bb554f03c5983d8cfb8c0b42e9c преди 72775977e89c25c99ee84d2c5baa3f86a8ba5cb4; 2d7605a729062bb554f03c5983d8cfb8c0b42e9c преди 459c6f35c58cf0fd5247e55d73ddaa29571d9b7e; 2d7605a729062bb554f03c5983d8cfb8c0b42e9c преди e634408d2b0cd939cfe019398a21fb47b7a8ffe3; 2d7605a729062bb554f03c5983d8cfb8c0b42e9c преди 2d86aeb46d5f69c704065a8c69822582787272a1; 2d7605a729062bb554f03c5983d8cfb8c0b42e9c преди 80df409e1a483676826a6c66e693dba6ac507751
    • Linux Linux: 6.2; преди 6.2; 6.6.143 до 6.6.*; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък

    История

    • 25 юни 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-53247: Linux | freedomonline.bg