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CVE-2024-38570: Linux

9.8

CVSS 3.1

0,7%

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix potential glock use-after-free on unmount When a DLM lockspace is released and there ares still locks in that lockspace, DLM will unlock those locks automatically. Commit fb6791d100d1b started exploiting this behavior to speed up filesystem unmount: gfs2 would simply free glocks it didn't want to unlock and then release the lockspace. This didn't take the bast callbacks for asynchronous lock contention notifications into account, which remain active until until a lock is unlocked or its lockspace is released. To prevent those callbacks from accessing deallocated objects, put the glocks that should not be unlocked on the sd_dead_glocks list, release the lockspace, and only then free those glocks. As an additional measure, ignore unexpected ast and bast callbacks if the receiving glock is dead.

Засегнати продукти

  • Linux Linux: fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 преди 94b32a85d1a76ae4f1b42a88677fa20b20187729; fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 преди 0636b34b44589b142700ac137b5f69802cfe2e37; fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 преди e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0; fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 преди 501cd8fabf621d10bd4893e37f6ce6c20523c8ca; fb6791d100d1bba20b5cdbc4912e1f7086ec60f8 преди d98779e687726d8f8860f1c54b5687eec5f63a73
  • Linux Linux: 3.8; преди 3.8; 6.1.191 до 6.1.*; 6.6.33 до 6.6.*; 6.8.12 до 6.8.*; 6.9.3 до 6.9.*; от 6.10 нататък

История

  • 19 юни 2024 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2024-38570: Linux | freedomonline.bg