usb: gadget: printer: fix infinite loop in printer_read() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: printer: fix infinite loop in printer_read() printer_read() uses the same variable for the requested copy size and the number of bytes actually copied to user space. copy_to_user() returns the number of bytes not copied, so when it fails to copy anything, the computed copied length becomes zero. In that case len, buf, current_rx_bytes and current_rx_buf are left unchanged. If RX data is available and the user buffer remains unwritable, the read loop can repeat indefinitely. Track the copied length separately and return -EFAULT, or the number of bytes already copied, if an iteration makes no progress.
References
- https://git.kernel.org/stable/c/3f81197364b57e5318620c75f3bd63f405f60552
- https://git.kernel.org/stable/c/e225e2998e5a9b83c838dbbe4511fb0d63f88daf
- https://git.kernel.org/stable/c/3081b0e187065c3b9577e393ad664b12854aeaf3
- https://git.kernel.org/stable/c/994afccfdcceb73be33f69a8a8ea71e260c9eca5
- https://git.kernel.org/stable/c/e03597ad9494b500344076589aeaa6c6d2d381d3
- https://git.kernel.org/stable/c/4cde0b38cc0cb8b7dc17295801015148de37d1d2
- https://git.kernel.org/stable/c/e41bbbbb1740ce4d7270ab1cdeca13892d6a8d2e
- https://git.kernel.org/stable/c/c2e819be6a5c7f34344926b4bd7e3dfca58cf48a
European references
- ENISA EUVD · EUVD-2026-55470
- GCVE · GCVE-0-2026-68369
CERT-FR advisories
- 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-1255 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1202 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1164 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1069 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected b185f01a9ab7af586133be2555298e960237359b < 3f81197364b57e5318620c75f3bd63f405f60552 ; affected b185f01a9ab7af586133be2555298e960237359b < e225e2998e5a9b83c838dbbe4511fb0d63f88daf ; affected b185f01a9ab7af586133be2555298e960237359b < 3081b0e187065c3b9577e393ad664b12854aeaf3 ; affected b185f01a9ab7af586133be2555298e960237359b < 994afccfdcceb73be33f69a8a8ea71e260c9eca5 ; affected b185f01a9ab7af586133be2555298e960237359b < e03597ad9494b500344076589aeaa6c6d2d381d3 ; affected b185f01a9ab7af586133be2555298e960237359b < 4cde0b38cc0cb8b7dc17295801015148de37d1d2 |
| Linux · Linux | affected 4.1 ; unaffected 0 < 4.1 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.148 ≤ 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 |