gpio: cdev: fix kernel stack leak to user-space in error path (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: gpio: cdev: fix kernel stack leak to user-space in error path If we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we return immediately before zeroing the info struct we'll end up passing to the user-space later in lineinfo_get_v1(). This may leak the kernel stack contents. Make gpio_desc_to_lineinfo() return int so that the -ENODEV returned on failure to acquire the guard can be propagated to the callers. While not strictly necessary: move the memset() before trying to acquire the SRCU read lock too for good measure.
References
European references
- ENISA EUVD · EUVD-2026-103573
- GCVE · GCVE-0-2026-98528
CERT-FR advisories
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < 8460ee5216ab9a38263b01dca4b0a27e083f70f3 ; affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < cf3d043582e106a0e57002bec8a6de8929ba3e1c ; affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < 60a466f231905cd96ae6f0f3c44a710c97873dac ; affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 < 1feb5d39b05afd902ed9fc902ec5b15be03a4bdb |
| Linux · Linux | affected 6.9 ; unaffected 0 < 6.9 ; unaffected 6.12.112 ≤ 6.12.* ; unaffected 6.18.55 ≤ 6.18.* ; unaffected 7.2.9 ≤ 7.2.* ; unaffected 7.3 ≤ * |
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 |