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CVE-2026-81008: 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: interconnect: Fix use after free in icc_get() and of_icc_get_by_index() In of_icc_get_by_index() and icc_get(), if the dynamic allocation for path->name fails via kasprintf(), the error handling path directly calls kfree(path) to free the path object and returns an error. However, prior to this point, path_find() calls path_init(), which already links the path's requests into the req_list of the respective interconnect nodes via hlist_add_head(). Directly invoking kfree(path) leaves dangling pointers in the hlist. A subsequent call to icc_get() or icc_set_bw() will traverse or modify these corrupted lists, triggering a slab use afterfree. KASAN report showing the vulnerability when reproducing via debugfs: BUG: KASAN: slab-use-after-free in path_find+0x6f8/0xcfc Write of size 8 at addr fff000000d43f748 by task sh/1 ... Call trace: kasan_report+0xac/0xfc path_find+0x6f8/0xcfc icc_get+0x148/0x380 icc_get_set+0xf8/0x2d0 ... Freed by task 1: kfree+0x1a0/0x4a4 icc_get+0x2cc/0x380 icc_get_set+0xf8/0x2d0 Fix this by replacing kfree(path) with the proper teardown function, icc_put(path), which safely removes the requests from the req_list using hlist_del() and drops the provider usage references before freeing the memory. Additionally, in icc_get(), ensure that the icc_lock mutex is released prior to calling icc_put(path) to avoid a deadlock, as icc_put() internally acquires the same lock.

    Засегнати продукти

    • Linux Linux: 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди 03c3af594dea9196cf6ca70d914b42aa8c873c35; 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди d4d73decdb9a44a248b1cbd04ed6f334df544d9c; 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди 9a671125d4228357e5b929733c4593d27a273749; 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди fedea72e8f312fe7d0c6cb19353e61d2d5643b11; 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди a4e9aa7907ade87d1d96853d14e05dcf682f8363; 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди db8147c5d5ad2cfa21c2be566f95981b41b05de6; 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди d715d19cfcfe99f361adb05cefc143a95d400b87; 3791163602f7140011a8dc1691cfe6ec0cb1ef07 преди 25c7e242aca084fdc1098248194032317dca625d
    • Linux Linux: 5.6; преди 5.6; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

    История

    • 11 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-81008: Linux | freedomonline.bg