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CVE-2026-72013: 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: riscv: Prevent NULL pointer dereference in machine_kexec_prepare() A NULL pointer dereference issue is noticed in riscv's machine_kexec_prepare(), where image->segment[i].buf might be NULL and copied unchecked. The NULL buf comes from ima_add_kexec_buffer(), where kbuf is added by kexec_add_buffer(), but kbuf.buffer is NULL, then it is copied without a check in machine_kexec_prepare(): kexec_file_load -> kimage_file_alloc_init() -> kimage_file_prepare_segments() -> ima_add_kexec_buffer() -> kexec_add_buffer() -> machine_kexec_prepare() -> memcpy() Address this by adding a check before the data copy attempt.

    Засегнати продукти

    • Linux Linux: 4211742f0f9e083188f4f0ada00d6eeeef31b7c7 преди 606cc45e871e34b80a2f63874f069387a5b44176; b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 преди c462e15497dc40abe369b3be7a2c91ac5d1be6f9; b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 преди b5f92cc4e24a298bf390b0b189a4b888c0900161; b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 преди 6ad6954492697681ebcfc1beb0eb384406cd4b65; b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 преди eadd0c2c76aee6a738f17f251434c77db3c606c8; b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 преди d5b2752a17efc165793ae38f2c24b5ed9c04ffde; b7fb4d78a6ade6026d9e5cf438c2a46ab962e032 преди 81bbcff0c053c4f5c711c31a9b72fc492bd96c3f; 3ca8a07f141fd8eec347a82bdfa4b94164f2bb97; 3ba83e46b591381e718007f55c9f831fd0cd7ee8; 5.15.47 преди 5.15.212; 5.17.15 преди 5.18; 5.18.4 преди 5.19
    • Linux Linux: 5.19; преди 5.19; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

    История

    • 15 август 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-72013: Linux | freedomonline.bg