CVE-2024-35880 (GCVE-0-2024-35880)

Vulnerability from cvelistv5 – Published: 2024-05-19 08:34 – Updated: 2025-05-04 09:07
VLAI?
Title
io_uring/kbuf: hold io_buffer_list reference over mmap
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: hold io_buffer_list reference over mmap If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 09f7520048eaaee9709091cd2787966f807da7c5 , < 65938e81df2197203bda4b9a0c477e7987218d66 (git)
Affected: 5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 , < 5fd8e2359498043e0b5329a05f02d10a9eb91eb9 (git)
Affected: 5cf4f52e6d8aa2d3b7728f568abbf9d42a3af252 , < 561e4f9451d65fc2f7eef564e0064373e3019793 (git)
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    Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.6.26 , ≤ 6.6.* (semver)
Unaffected: 6.8.5 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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 patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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