# CVE-2025-40267: linux: In the Linux kernel, the following vulnerability has been resolved:  io_uring/rw: ensure allocated iovec gets cleared...

CVE-2025-40267 is fixed in linux on 1 platform by DEBIAN-CVE-2025-40267 (version 6.17.9-1), released December 6, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-40267
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 6, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  io_uring/rw: ensure allocated iovec gets cleared for early failure  A previous commit reused the recyling infrastructure for early cleanup, but this is not enough for the case where our internal caches have overflowed. If this happens, then the allocated iovec can get leaked if the request is also aborted early.  Reinstate the previous forced free of the iovec for that situation.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.17.9-1 | [DEBIAN-CVE-2025-40267](https://patchblox.com/security/data/fix/linux/debian-cve-2025-40267.md) | Dec 6, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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