usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers() (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.23 % · centile 14 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
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Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers() Previously fsg_num_buffers_validate() was removed as it was not necessary due to Kconfig setting the limits for n from 2 to 256 with default as 2. However, setting the page content in such a way that kstrtou8() reflects n value as either 0 or 1 bypasses these restrictions leading to a null pointer dereference if n is 0. Fix this by adding a check for n < 2 and returning -EINVAL if n is either 0 or 1 consistent with Kconfig logic.
Références
- https://git.kernel.org/stable/c/38edd187a37db0d8e4bf84cc954dbdbe7bfa366f
- https://git.kernel.org/stable/c/e54820b9dc1d6d731ecc3e51462445dc952906a7
- https://git.kernel.org/stable/c/5d56dbaeb81d5cd967cdee8ddcc70814b7139246
- https://git.kernel.org/stable/c/f4f0fe3ab47ed57ee4974fdd3e9dccb7839a7ebf
- https://git.kernel.org/stable/c/51cc9af4f2d3f0b765266aced66b9b532b423b13
- https://git.kernel.org/stable/c/9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957
- https://git.kernel.org/stable/c/b9b5b5df5b8dd3c1572ed267200276a44cc67d8e
- https://git.kernel.org/stable/c/2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc
Références européennes
- ENISA EUVD · EUVD-2026-80631
- GCVE · GCVE-0-2026-90023
Avis du CERT-FR
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1374 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected fe5a6c48fd954489f51aab151d5dad9254c76419 < 38edd187a37db0d8e4bf84cc954dbdbe7bfa366f ; affected fe5a6c48fd954489f51aab151d5dad9254c76419 < e54820b9dc1d6d731ecc3e51462445dc952906a7 ; affected fe5a6c48fd954489f51aab151d5dad9254c76419 < 5d56dbaeb81d5cd967cdee8ddcc70814b7139246 ; affected fe5a6c48fd954489f51aab151d5dad9254c76419 < f4f0fe3ab47ed57ee4974fdd3e9dccb7839a7ebf ; affected fe5a6c48fd954489f51aab151d5dad9254c76419 < 51cc9af4f2d3f0b765266aced66b9b532b423b13 ; affected fe5a6c48fd954489f51aab151d5dad9254c76419 < 9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957 |
| Linux · Linux | affected 4.8 ; unaffected 0 < 4.8 ; unaffected 5.10.273 ≤ 5.10.* ; unaffected 5.15.224 ≤ 5.15.* ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 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 |