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CVE-2026-52934: Linux

8.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се от съседна мрежа, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: tvlv: reject oversized TVLV packets batadv_tvlv_container_ogm_append() builds a TVLV packet section from the tvlv.container_list. The total size of this section is computed by batadv_tvlv_container_list_size(), which sums the sizes of all registered containers. The return type and accumulator in batadv_tvlv_container_list_size() were u16. If the accumulated size exceeds U16_MAX, the value wraps around, causing the subsequent allocation in batadv_tvlv_container_ogm_append() to be undersized. The memcpy-style copy that follows would then write beyond the end of the allocated buffer, corrupting kernel memory. Fix this by widening the return type of batadv_tvlv_container_list_size() to size_t. In batadv_tvlv_container_ogm_append(), check the computed length against U16_MAX before proceeding, and bail out as if the allocation had failed when the limit is exceeded.

    Засегнати продукти

    • Linux Linux: ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди c02aa6c0c9d1bea9bb75dea362b75ad225137bae; ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди 1595628a2f877d052eda18865ccf539392c47c04; ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди 6448a49344e87487b61bd88cb850cd694a0f576d; ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди 13493b00dd1e05a705981e052158652ea23eb482; ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди 94db72e9dac202e017ee3db22c59d17e4f3bf171; ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди ede47988ac5687793745b17c1634a496a2299919; ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди 94a3d72cd9b21116d7c6d5bdc57c11401fc28557; ef26157747d42254453f6b3ac2bd8bd3c53339c3 преди f50487e3566358b2b982b7801945e858c78ad9ab
    • Linux Linux: 3.13; преди 3.13; 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.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

    История

    • 24 юни 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-52934: Linux | freedomonline.bg