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CVE-2026-89776: 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: vxlan: vnifilter: enforce exact length of GROUP/GROUP6 attributes The VXLAN VNI filter entry policy declares the GROUP/GROUP6 address attributes as NLA_BINARY with only a maximum length, so validate_nla() accepts a payload shorter than the address. The GROUP consumer reads it with nla_get_in_addr(), an unconditional 4-byte load, so a short attribute over-reads up to 3 bytes of uninitialised slab data, which are stored into remote_ip and echoed back via RTM_GETTUNNEL, disclosing kernel memory. Switch both entries to NLA_POLICY_EXACT_LEN() so the validator rejects any GROUP/GROUP6 that is not exactly 4 / 16 bytes; a valid address is always sent at full width.

    Засегнати продукти

    • Linux Linux: f9c4bb0b245cee35ef66f75bf409c9573d934cf9 преди e12c4663529699f457b2988c1dfedf4d13b3b3be; f9c4bb0b245cee35ef66f75bf409c9573d934cf9 преди 47bfcc871576eaef6c8edab6749acd4b317306ea; f9c4bb0b245cee35ef66f75bf409c9573d934cf9 преди a9ec10815199f9879ba080241dc555efb1daf324; f9c4bb0b245cee35ef66f75bf409c9573d934cf9 преди daebc7064a1b4c12c98e52c4bceede7f2fcd573c; f9c4bb0b245cee35ef66f75bf409c9573d934cf9 преди ad32e564c62ebf5ba76dd60a22af52c69d54d17b; f9c4bb0b245cee35ef66f75bf409c9573d934cf9 преди 984f831dda31b3a18f47454cf64989f65402879e
    • Linux Linux: 5.18; преди 5.18; 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.*; 7.3 до *

    История

    • 16 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89776: Linux | freedomonline.bg