io_uring: fix memory leak when removing provided buffers (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.19 % · percentile 9 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Deferred
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix memory leak when removing provided buffers When removing provided buffers, io_buffer structs are not being disposed of, leading to a memory leak. They can't be freed individually, because they are allocated in page-sized groups. They need to be added to some free list instead, such as io_buffers_cache. All callers already hold the lock protecting it, apart from when destroying buffers, so had to extend the lock there.
References
European references
- ENISA EUVD · EUVD-2025-205113
- GCVE · GCVE-0-2023-54041
CERT-FR advisories
- CERTFR-2026-AVI-0108 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 < ac48787f58d1068f4e06d627c1135784d64b4c72 ; affected cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 < c117c15927772d1624c29c092b6bd3f47c7faa48 ; affected cc3cec8367cba76a8ae4c271eba8450f3efc1ba3 < b4a72c0589fdea6259720375426179888969d6a2 |
| Linux · Linux | affected 5.18 ; unaffected 0 < 5.18 ; unaffected 6.1.24 ≤ 6.1.* ; unaffected 6.2.11 ≤ 6.2.* ; unaffected 6.3 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |