CVE-2026-68449
ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning
Non disponible
En bref
- Source
- NVD
- EPSS
- EPSS 0.16 % · centile 5 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning The hand-rolled bit-scanning loop in the NCQ completion path has an infinite loop bug. When tag_mask has only high bits set (e.g. 0x80000000), the inner while loop left-shifts tag_mask until it overflows to 0. At that point !(0 & 1) is always true and 0 <<= 1 stays 0, causing an infinite loop in hardirq context with a spinlock held. Replace the open-coded bit-scanning with __ffs() which correctly finds the least significant set bit and is bounded by the width of the argument.
Références
- https://git.kernel.org/stable/c/ea9fa4dabe476f85fe73df30a6ab61a23c22fda4
- https://git.kernel.org/stable/c/d72e8089dc332ac48293512ef0de77cbe0e04d25
- https://git.kernel.org/stable/c/4c6e64cae2b2dab32ad9099faa339f6a72c0ce16
- https://git.kernel.org/stable/c/8c5de0d8ab6824cfdadcbbe1be4c6c9d9f4c1f80
- https://git.kernel.org/stable/c/1842d45f461a78988254631893329bdf4596e954
- https://git.kernel.org/stable/c/29b916d3556bd12a95be7c56ca391b8cd572f8be
- https://git.kernel.org/stable/c/c2130f6553f4a5cbdc259de069600117a995f197
Références européennes
- ENISA EUVD · EUVD-2026-57055
- GCVE · GCVE-0-2026-68449
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1069 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected 62936009f35a6659cc3ebe0d90c754182d60da73 < ea9fa4dabe476f85fe73df30a6ab61a23c22fda4 ; affected 62936009f35a6659cc3ebe0d90c754182d60da73 < d72e8089dc332ac48293512ef0de77cbe0e04d25 ; affected 62936009f35a6659cc3ebe0d90c754182d60da73 < 4c6e64cae2b2dab32ad9099faa339f6a72c0ce16 ; affected 62936009f35a6659cc3ebe0d90c754182d60da73 < 8c5de0d8ab6824cfdadcbbe1be4c6c9d9f4c1f80 ; affected 62936009f35a6659cc3ebe0d90c754182d60da73 < 1842d45f461a78988254631893329bdf4596e954 ; affected 62936009f35a6659cc3ebe0d90c754182d60da73 < 29b916d3556bd12a95be7c56ca391b8cd572f8be |
| Linux · Linux | affected 2.6.36 ; unaffected 0 < 2.6.36 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.6.148 ≤ 6.6.* ; unaffected 6.12.101 ≤ 6.12.* |
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 |