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CVE PROGRAM SOURCE RECORDUnscored

CVE-2023-54041

io_uring: fix memory leak when removing provided buffers

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix memory leak when removing provided buffers When removing provided buffers, io_buffer structs are not being disposed of, leading to a memory leak. They can't be freed individually, because they are allocated in page-sized groups. They need to be added to some free list instead, such as io_buffers_cache. All callers already hold the lock protecting it, apart from when destroying buffers, so had to extend the lock there.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 to < ac48787f58d1068f4e06d627c1135784d64b4c72affected
  • cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 to < c117c15927772d1624c29c092b6bd3f47c7faa48affected
  • cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 to < b4a72c0589fdea6259720375426179888969d6a2affected

Linux Linux

Default version status: affected

  • 5.18affected
  • 0 to < 5.18unaffected
  • 6.1.24 to ≤ 6.1.*unaffected
  • 6.2.11 to ≤ 6.2.*unaffected
  • 6.3 to ≤ *unaffected

References