CVE-2025-40216io_uring/rsrc: don't rely on user vaddr alignment
Updated under an hour ago ()
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It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: don't rely on user vaddr alignment There is no guaranteed alignment for user pointers, however the calculation of an offset of the first page into a folio after coalescing uses some weird bit mask logic, get rid of it.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from a8edbb424b1391b077407c75d8f5d2ede77aa70d before 50998b0ae7d9d552e96d8b7239981cf05f65eff5; from a8edbb424b1391b077407c75d8f5d2ede77aa70d before f16769241594be59387b56ab525e327f54377e60; from a8edbb424b1391b077407c75d8f5d2ede77aa70d before 3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b | CNA record |
References
- https://git.kernel.org/stable/c/50998b0ae7d9d552e96d8b7239981cf05f65eff5
- https://git.kernel.org/stable/c/f16769241594be59387b56ab525e327f54377e60
- https://git.kernel.org/stable/c/3a3c6d61577dbb23c09df3e21f6f9eda1ecd634b
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.