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CVE-2026-46094: 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: ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access The bounds check for the next xattr entry in check_xattrs() uses (void *)next >= end, which allows next to point within sizeof(u32) bytes of end. On the next loop iteration, IS_LAST_ENTRY() reads 4 bytes via *(__u32 *)(entry), which can overrun the valid xattr region. For example, if next lands at end - 1, the check passes since next < end, but IS_LAST_ENTRY() reads 4 bytes starting at end - 1, accessing 3 bytes beyond the valid region. Fix this by changing the check to (void *)next + sizeof(u32) > end, ensuring there is always enough space for the IS_LAST_ENTRY() read on the subsequent iteration.

    Засегнати продукти

    • Linux Linux: 3478c83cf26bbffd026ae6a56bcb1fe544f0834e преди ab6da97bc310db35d4e4ef5354bc3ff626b0698c; 3478c83cf26bbffd026ae6a56bcb1fe544f0834e преди 5a5314d2387633a272a04d1bd8727f99058e4e68; 3478c83cf26bbffd026ae6a56bcb1fe544f0834e преди 537e065977022aa22f2c2503e8accaf16622e0fd; 3478c83cf26bbffd026ae6a56bcb1fe544f0834e преди 520986722dbf869c122252123fc161c7302eab7d; 3478c83cf26bbffd026ae6a56bcb1fe544f0834e преди eceafc31ea7b42c984ece10d79d505c0bb6615d5
    • Linux Linux: 6.3; преди 6.3; 6.6.140 до 6.6.*; 6.12.86 до 6.12.*; 6.18.27 до 6.18.*; 7.0.4 до 7.0.*; 7.1 до *

    История

    • 27 май 2026 Публикувано

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    CVE-2026-46094: Linux | freedomonline.bg