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CVE-2026-23410: 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: apparmor: fix race on rawdata dereference There is a race condition that leads to a use-after-free situation: because the rawdata inodes are not refcounted, an attacker can start open()ing one of the rawdata files, and at the same time remove the last reference to this rawdata (by removing the corresponding profile, for example), which frees its struct aa_loaddata; as a result, when seq_rawdata_open() is reached, i_private is a dangling pointer and freed memory is accessed. The rawdata inodes weren't refcounted to avoid a circular refcount and were supposed to be held by the profile rawdata reference. However during profile removal there is a window where the vfs and profile destruction race, resulting in the use after free. Fix this by moving to a double refcount scheme. Where the profile refcount on rawdata is used to break the circular dependency. Allowing for freeing of the rawdata once all inode references to the rawdata are put.

    Засегнати продукти

    • Linux Linux: 5d5182cae40115c03933989473288e54afb39c7c преди 3b8e77c7abab40e6de9ad9de730d77984a498840; 5d5182cae40115c03933989473288e54afb39c7c преди d9d8560b9b7932f8cffc4c068c14289220900f79; 5d5182cae40115c03933989473288e54afb39c7c преди 6b6ba87579c7e7c669e0bec91823e7fb693bc5df; 5d5182cae40115c03933989473288e54afb39c7c преди 6ef1f2926c41ab96952d9696d55a052f1b3a9418; 5d5182cae40115c03933989473288e54afb39c7c преди f9761add6d100962a23996cb68f3d6abdd4d1815; 5d5182cae40115c03933989473288e54afb39c7c преди af782cc8871e3683ddd5a3cd2f7df526599863a9; 5d5182cae40115c03933989473288e54afb39c7c преди 763e838adc3c7ec5a7df2990ce84cad951e42721; 5d5182cae40115c03933989473288e54afb39c7c преди a0b7091c4de45a7325c8780e6934a894f92ac86b
    • Linux Linux: 4.13; преди 4.13; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.169 до 6.1.*; 6.6.130 до 6.6.*; 6.12.77 до 6.12.*; 6.18.18 до 6.18.*; 6.19.8 до 6.19.*; 7.0 до *

    История

    • 1 април 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-23410: Linux | freedomonline.bg