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CVE-2026-63891: 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: thunderbolt: property: Cap recursion depth in __tb_property_parse_dir() A DIRECTORY entry's value field is used as the dir_offset for a recursive call into __tb_property_parse_dir() with no depth counter. A crafted peer that chains DIRECTORY entries into a back-reference loop drives the parser until the kernel stack is exhausted and the guard page fires. Any untrusted XDomain peer (cable, dock, in-line inspector, adjacent host) that reaches the PROPERTIES_REQUEST control-plane exchange can trigger this without authentication. Thread a depth counter through tb_property_parse() and __tb_property_parse_dir(), and reject blocks that exceed TB_PROPERTY_MAX_DEPTH = 8. That is comfortably larger than any observed legitimate XDomain layout. Operators who do not need XDomain host-to-host discovery can disable the path entirely with thunderbolt.xdomain=0 on the kernel command line.

    Засегнати продукти

    • Linux Linux: cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди 2b5f47a710172c962ef42d1b732b04d2ad0dce21; cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди 95839a67ea56ca35732aad7f711404a3127cfe2d; cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди 0a84ab9271936c11e84e511bb52fc5682f8b6726; cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди b4621e5ef63405c317a84b711faf3bd75b3c6a94; cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди f31c6d220f455b5af63590302b30e1b932d14599; cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди 830c8a9b467e7d3a158483d37fa7dc13892b293a; cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди ed9455ef4bd9babc90f92e526abe3fb68c1a8709; cdae7c07e3e3509eaabc18c1640a55dc5b99c179 преди 928abe19fbf0127003abcb1ea69cabc1c897d0ab
    • Linux Linux: 4.15; преди 4.15; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.93 до 6.12.*; 6.18.35 до 6.18.*; 7.0.12 до 7.0.*; от 7.1 нататък

    История

    • 19 юли 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-63891: Linux | freedomonline.bg