CVE-2026-43366 (GCVE-0-2026-43366)
Vulnerability from cvelistv5
Published
2026-05-08 14:21
Modified
2026-10-19 19:16
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: check if target buffer list is still legacy on recycle There's a gap between when the buffer was grabbed and when it potentially gets recycled, where if the list is empty, someone could've upgraded it to a ring provided type. This can happen if the request is forced via io-wq. The legacy recycling is missing checking if the buffer_list still exists, and if it's of the correct type. Add those checks.
References
Impacted products
Vendor Product Version
Linux Linux Version: c7fb19428d67dd0a2a78a4f237af01d39c78dc5a
Version: c7fb19428d67dd0a2a78a4f237af01d39c78dc5a
Version: c7fb19428d67dd0a2a78a4f237af01d39c78dc5a
Version: c7fb19428d67dd0a2a78a4f237af01d39c78dc5a
Version: c7fb19428d67dd0a2a78a4f237af01d39c78dc5a
Version: c7fb19428d67dd0a2a78a4f237af01d39c78dc5a
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