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CVE-2026-23206: 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: dpaa2-switch: prevent ZERO_SIZE_PTR dereference when num_ifs is zero The driver allocates arrays for ports, FDBs, and filter blocks using kcalloc() with ethsw->sw_attr.num_ifs as the element count. When the device reports zero interfaces (either due to hardware configuration or firmware issues), kcalloc(0, ...) returns ZERO_SIZE_PTR (0x10) instead of NULL. Later in dpaa2_switch_probe(), the NAPI initialization unconditionally accesses ethsw->ports[0]->netdev, which attempts to dereference ZERO_SIZE_PTR (address 0x10), resulting in a kernel panic. Add a check to ensure num_ifs is greater than zero after retrieving device attributes. This prevents the zero-sized allocations and subsequent invalid pointer dereference.

    Засегнати продукти

    • Linux Linux: 0b1b71370458860579831e77485883fcf2e8fbbe преди 2fcccca88456b592bd668db13aa1d29ed257ca2b; 0b1b71370458860579831e77485883fcf2e8fbbe преди 80165ff16051448d6f840585ebe13f2400415df3; 0b1b71370458860579831e77485883fcf2e8fbbe преди b97415c4362f739e25ec6f71012277086fabdf6f; 0b1b71370458860579831e77485883fcf2e8fbbe преди 4acc40db06ffd0fd92683505342b00c8a7394c60; 0b1b71370458860579831e77485883fcf2e8fbbe преди 155eb99aff2920153bf21217ae29565fff81e6af; 0b1b71370458860579831e77485883fcf2e8fbbe преди ed48a84a72fefb20a82dd90a7caa7807e90c6f66
    • Linux Linux: 5.13; преди 5.13; 5.15.200 до 5.15.*; 6.1.163 до 6.1.*; 6.6.124 до 6.6.*; 6.12.70 до 6.12.*; 6.18.10 до 6.18.*; от 6.19 нататък

    История

    • 14 февруари 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-23206: Linux | freedomonline.bg