CVE-2023-54041 (GCVE-0-2023-54041)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:56 – Updated: 2025-12-24 10:56
VLAI?
Title
io_uring: fix memory leak when removing provided buffers
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 , < ac48787f58d1068f4e06d627c1135784d64b4c72 (git)
Affected: cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 , < c117c15927772d1624c29c092b6bd3f47c7faa48 (git)
Affected: cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 , < b4a72c0589fdea6259720375426179888969d6a2 (git)
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    Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.24 , ≤ 6.1.* (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2025-12-24T10:53:46.181Z",
    "dateUpdated": "2025-12-24T10:56:06.858Z",
    "state": "PUBLISHED"
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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