Към съдържанието
Търсене

CVE-2026-90002: Linux

7.8

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 локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: ftrace: Take trace_array reference before accessing its ftrace_ops The trace instance files set_ftrace_filter and set_ftrace_notrace was updated to work with specific trace instances (trace_arrays). The issue is that when these files are opened, there is a small race window where it will use the ftrace_ops from the inode->private pointer to get a reference to the trace_array and then take its reference. The problem is that the ftrace_ops itself could be freed. If the rmdir on the instance happens at the same time the set_ftrace_filter file is opened, the rmdir could have also freed the ftrace_ops and referencing it will cause a use-after-free bug and crash the kernel. Instead, pass in the trace_array as the file private data (NULL for the top level instance), and then pass both the trace_array and the ftrace_ops to the ftrace_regex_open() function. If the trace_array is NULL, then it just uses the ftrace_ops without the need to take its reference (like normal). If the ftrace_ops is NULL, that is only the case for the top level instance and the global_ops can be used. This allows the trace_array to have its reference incremented before touching the ftrace_ops that could also be freed when the instance is.

    Засегнати продукти

    • Linux Linux: 591dffdade9f07692a7dd3ed16830ec24e901ece преди 0124b36a7eac1dd0402146fc6c1f732877b9cd9f; 591dffdade9f07692a7dd3ed16830ec24e901ece преди ffe16fe221e25cd1915602e6753c3d3285ed9a98; 591dffdade9f07692a7dd3ed16830ec24e901ece преди 8f062a6bfeb4b4e18d469a673aec23a7b73c3e8a; 591dffdade9f07692a7dd3ed16830ec24e901ece преди 29266da8ee1d9be656b1f22460c49538e1930658; 591dffdade9f07692a7dd3ed16830ec24e901ece преди 177cd8966325f0ffffa3c9381f9e0422019a3973; 591dffdade9f07692a7dd3ed16830ec24e901ece преди 83fd7eca5ab0d3ac3f23bff889175d847e21af06; 591dffdade9f07692a7dd3ed16830ec24e901ece преди cee8f286794df916553d8d445eac5c323ec5b0f8; 591dffdade9f07692a7dd3ed16830ec24e901ece преди 9100191e5acb2e5ea2313f436667bb5fce129f47
    • Linux Linux: 3.15; преди 3.15; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.112 до 6.12.*; 6.18.52 до 6.18.*; 7.2.5 до 7.2.*; от 7.3 нататък

    История

    • 16 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници