CVE-2026-23259

MediumCVSS 5.5/10Last modified Nov 5, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

io_uring/rw: free potentially allocated iovec on cache put failure

If a read/write request goes through io_req_rw_cleanup() and has an allocated iovec attached and fails to put to the rw_cache, then it may end up with an unaccounted iovec pointer. Have io_rw_recycle() return whether it recycled the request or not, and use that to gauge whether to free a potential iovec or not.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= a9165b83c1937eeed1f0c731468216d6371d647f, < 41cda4c66846c3bfcdeaf28444ccabbb55e64cf1; >= a9165b83c1937eeed1f0c731468216d6371d647f, < 1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c; >= a9165b83c1937eeed1f0c731468216d6371d647f, < 4b9748055457ac3a0710bf210c229d01ea1b01b9
LinuxLinux6.10

References

Timeline

Published
Mar 18, 2026
Last modified
Nov 5, 2026
NVD status
Modified

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CVE-2026-23259: Medium severity, CVSS 5.5 | Vulnix