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CVE-2024-35874

Disclosure Date: May 19, 2024
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Description

In the Linux kernel, the following vulnerability has been resolved:

aio: Fix null ptr deref in aio_complete() wakeup

list_del_init_careful() needs to be the last access to the wait queue
entry – it effectively unlocks access.

Previously, finish_wait() would see the empty list head and skip taking
the lock, and then we’d return – but the completion path would still
attempt to do the wakeup after the task_struct pointer had been
overwritten.

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General Information

Vendors

  • Linux

Products

  • Linux

Additional Info

Technical Analysis