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CVE-2026-92494: Linux

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CVSS

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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: ext4: fix buffer_head leak in ext4_init_orphan_info ext4_init_orphan_info() reads orphan file blocks with ext4_bread() and stores the returned buffer_head in oi->of_binfo[i].ob_bh. If ext4_bread() succeeds but the orphan block magic or checksum validation fails, the function jumps to out_free. However, the old out_free loop starts releasing buffers from i - 1, so the current buffer_head at index i is skipped. This leaks the buffer_head reference obtained by ext4_bread() on the bad magic and bad checksum error paths. Fix this by tracking the number of successfully read buffer_heads and releasing exactly those buffer_heads on the error path.

    Засегнати продукти

    • Linux Linux: 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 преди a9a6ec1298f9bc134b2c5db27d25bb10603b7113; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 преди 35fc83c65faf7949f5701bb34b20f822560a7718; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 преди 74637f7fef030e5fb2e835b7dfeb05efdc48e0fe; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 преди 6ec53ccab0d691b3c73e03d930343ca45987e88d; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 преди 1399f102d8a1855c1a38506057306ec79d0787d9; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 преди e1e342d9a561c016b8531ec1f4dcefaad9d64954; 02f310fcf47fa9311d6ba2946a8d19e7d7d11f37 преди 05704335803b69c1bfa8637b7ada942bf2ee8a41
    • Linux Linux: 5.15; преди 5.15; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

    История

    • 17 септември 2026 Публикувано

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    Първоизточници

    CVE-2026-92494: Linux | freedomonline.bg