s390/dasd: Guard sysfs discipline callbacks against unallocated private data (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Guard sysfs discipline callbacks against unallocated private data Several sysfs show/store handlers call a discipline callback that dereferences device->private, either directly or through the DASD_DEFINE_ATTR() macro. During dasd_generic_set_online() the discipline is assigned before check_device() allocates device->private, so an unprivileged read of one of these world-readable attributes in that window dereferences a NULL pointer and panics. Guard the dereference inside each callback that actually touches device->private.
References
- https://git.kernel.org/stable/c/644b666c202cce12ccfcf9ded67089b18f4f7659
- https://git.kernel.org/stable/c/4a042d8e5f34282577ece50515cea8bb1246914d
- https://git.kernel.org/stable/c/bd8b4572528f9604a13bf3c7c2a167f5cf222f72
- https://git.kernel.org/stable/c/57db27ccc162afe0726cffec0ae62e410ed2d0e9
- https://git.kernel.org/stable/c/536407b272402af679155910d7fdeeb4834eefb9
- https://git.kernel.org/stable/c/6452c13646af7c13d7f6668b6690cfb2427e7f7b
- https://git.kernel.org/stable/c/449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5
- https://git.kernel.org/stable/c/2a1780f9fc2493bd34c418a0be6fc58943afcecf
European references
- ENISA EUVD · EUVD-2026-76363
- GCVE · GCVE-0-2026-89457
CERT-FR advisories
- 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
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected c729696bcf8b23450043dd9c9972c15e53419ae4 < 644b666c202cce12ccfcf9ded67089b18f4f7659 ; affected c729696bcf8b23450043dd9c9972c15e53419ae4 < 4a042d8e5f34282577ece50515cea8bb1246914d ; affected c729696bcf8b23450043dd9c9972c15e53419ae4 < bd8b4572528f9604a13bf3c7c2a167f5cf222f72 ; affected c729696bcf8b23450043dd9c9972c15e53419ae4 < 57db27ccc162afe0726cffec0ae62e410ed2d0e9 ; affected c729696bcf8b23450043dd9c9972c15e53419ae4 < 536407b272402af679155910d7fdeeb4834eefb9 ; affected c729696bcf8b23450043dd9c9972c15e53419ae4 < 6452c13646af7c13d7f6668b6690cfb2427e7f7b |
| Linux · Linux | affected 5.3 ; unaffected 0 < 5.3 ; 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 |