CVE-2026-53126: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix disk reference leak in blkcg_maybe_throttle_current() Add the missing put_disk() on the error path in blkcg_maybe_throttle_current(). When blkcg lookup, blkg lookup, or blkg_tryget() fails, the function jumps to the out label which only calls rcu_read_unlock() but does not release the disk reference acquired by blkcg_schedule_throttle() via get_device(). Since current->throttle_disk is already set to NULL before the lookup, blkcg_exit() cannot release this reference either, causing the disk to never be freed. Restore the reference release that was present as blk_put_queue() in the original code but was inadvertently dropped during the conversion from request_queue to gendisk.

Засегнати продукти

• Linux Linux: f05837ed73d0c73e950b2d9f2612febb0d3d451e преди 4048ed98860d3785645ebbd34f69566a6c7320c3; f05837ed73d0c73e950b2d9f2612febb0d3d451e преди 73a5af059905d171b398c8b2381632ee499948b5; f05837ed73d0c73e950b2d9f2612febb0d3d451e преди b3e005f16cd98f815429a87aef4c61e9c140779f; f05837ed73d0c73e950b2d9f2612febb0d3d451e преди 000e8454692cab9d1f1b80130e2870e355301d06; f05837ed73d0c73e950b2d9f2612febb0d3d451e преди 23308af722fefed00af5f238024c11710938fba3
• Linux Linux: 6.3; преди 6.3; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-53126
• https://nvd.nist.gov/vuln/detail/CVE-2026-53126
• https://git.kernel.org/stable/c/4048ed98860d3785645ebbd34f69566a6c7320c3
• https://git.kernel.org/stable/c/73a5af059905d171b398c8b2381632ee499948b5
• https://git.kernel.org/stable/c/b3e005f16cd98f815429a87aef4c61e9c140779f
• https://git.kernel.org/stable/c/000e8454692cab9d1f1b80130e2870e355301d06
• https://git.kernel.org/stable/c/23308af722fefed00af5f238024c11710938fba3