CVE-2026-43366High· 7.8▾ TwilightIn 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…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
Last analysed / modified upstream
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.
Linux >= c7fb19428d67dd0a2a78a4f237af01d39c78dc5a < a7b33671e418fca507feebd1d56e7f4952a4b25cLinux >= c7fb19428d67dd0a2a78a4f237af01d39c78dc5a < 439a6728ec4641ffad1ca796622c19bc525e570fLinux >= c7fb19428d67dd0a2a78a4f237af01d39c78dc5a < f3fb54e7a8b4aadcc2836ee463eec8c88709b8aaLinux >= c7fb19428d67dd0a2a78a4f237af01d39c78dc5a < 50ad880db3013c6fee0ef13781762a39e2e7ef83Linux >= c7fb19428d67dd0a2a78a4f237af01d39c78dc5a < 97b57f69fee1b61b41acbf37e7720cac9d389fa4Linux >= c7fb19428d67dd0a2a78a4f237af01d39c78dc5a < c2c185be5c85d37215397c8e8781abf0a69bec1fLinux 5.19Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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