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CVE-2026-90250: 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: bpf, cgroup: Fix storage null-ptr-deref after replacing prog Syzkaller reported a storage null-ptr-deref issue after replacing prog. This occurs in the following scenario: 1. prog A, an empty prog, is attached to a cgrp. 2. prog B uses BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE and calls the bpf_get_local_storage helper. 3. link_update is called to replace prog A with prog B. The reason is that __cgroup_bpf_replace fails to alloc and assign the required cgrp storage for the incoming replacement prog. Consequently, the new prog inherits an uninit storage, leading to null-ptr-deref panic when kick the new prog. Fix this by rejecting a link update if new_prog's cgroup storage is incompatible with link->prog.

    Засегнати продукти

    • Linux Linux: 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab преди 85785e7e2ebddcaa5c3b31bd3bcd83ae648985d4; 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab преди 16c8321ee40c420f8e02e09515a5126682ddf4ea; 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab преди a033c950f6731be88a7da98604ed78f302f15b80; 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab преди 1ab3da12061d7ccb099f7e925fa2d865967a316a; 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab преди 12feca126831556dc7fabe5a3ba28fbd328768b6; 0c991ebc8c69d29b7fc44db17075c5aa5253e2ab преди 3f562c537e9ecf4bc5e206cfffc2cc047f1b7e94
    • Linux Linux: 5.7; преди 5.7; 6.1.191 до 6.1.*; 6.6.160 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

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-90250: Linux | freedomonline.bg