rapidio: mport_cdev: fix use-after-free in dma_req_free() (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.16 % · centile 6 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
Rechercher sur…
Description
In the Linux kernel, the following vulnerability has been resolved: rapidio: mport_cdev: fix use-after-free in dma_req_free() dma_req_free() acquires buf_mutex through req->map, drops the mapping reference with kref_put(), and then dereferences req->map again to unlock the mutex. If kref_put() drops the last reference, mport_release_mapping() frees the mapping, and the subsequent mutex_unlock() dereferences a freed object. This is a use-after-free. Fix this by caching map and md before kref_put(), clearing req->map while holding buf_mutex, and using the cached md for mutex unlocking. The bug is reachable from userspace via the RapidIO mport character device interface.
Références
- https://git.kernel.org/stable/c/00c5ed913b0dc563fbeb8a97ea8916c03bbbbf6a
- https://git.kernel.org/stable/c/fc79c07cdcde02c5b17633d78777de6ac2c14b29
- https://git.kernel.org/stable/c/26ccfe7d69e27b0d933ae0a64a23a0cb9b9a85a6
- https://git.kernel.org/stable/c/bd8881c24a9520f9c3d3e855d866197f63e471a7
- https://git.kernel.org/stable/c/9a9929ec875ff20922c90c96fd544ae8a2a61a8d
- https://git.kernel.org/stable/c/e6e925cc1f8067c65c7bec3da50a0ead3b3ef4e0
- https://git.kernel.org/stable/c/211c68d817a3d9dc14c0026a59da7cac30f8147e
- https://git.kernel.org/stable/c/5cbef379a94b161726c5f504598bf4791d45cedc
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-76654
- GCVE · GCVE-0-2026-89742
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected e8de370188d098bb49483c287b44925957c3c9b6 < 00c5ed913b0dc563fbeb8a97ea8916c03bbbbf6a ; affected e8de370188d098bb49483c287b44925957c3c9b6 < fc79c07cdcde02c5b17633d78777de6ac2c14b29 ; affected e8de370188d098bb49483c287b44925957c3c9b6 < 26ccfe7d69e27b0d933ae0a64a23a0cb9b9a85a6 ; affected e8de370188d098bb49483c287b44925957c3c9b6 < bd8881c24a9520f9c3d3e855d866197f63e471a7 ; affected e8de370188d098bb49483c287b44925957c3c9b6 < 9a9929ec875ff20922c90c96fd544ae8a2a61a8d ; affected e8de370188d098bb49483c287b44925957c3c9b6 < e6e925cc1f8067c65c7bec3da50a0ead3b3ef4e0 |
| Linux · Linux | affected 4.6 ; unaffected 0 < 4.6 ; unaffected 5.10.270 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 6.6.* |
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 |