drm/i915/mst: limit DP MST ESI service loop (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: drm/i915/mst: limit DP MST ESI service loop The loop in intel_dp_check_mst_status() keeps servicing interrupts originating from the sink without bound. Add an upper bound to the new interrupts occurring during interrupt processing to not get stuck on potentially stuck sink devices. Use arbitrary 32 tries to clear incoming interrupts in one go. Discovered using AI-assisted static analysis confirmed by Intel Product Security. Note: The condition likely pre-dates the commit in the Fixes: tag, but this is about as far back as a backport has any chance of succeeding. Before that, the retry had a goto. (cherry picked from commit b4ea5272133059acb493cc36599071a9e852ec2e)
References
- https://git.kernel.org/stable/c/76a1817d31f1a01fc5d9de63cb219e2c10d40400
- https://git.kernel.org/stable/c/fae63319ad397666a9c56a17ea1047d2bf9a1e25
- https://git.kernel.org/stable/c/02ceba559412751106c0cfa5cbdb80db50303083
- https://git.kernel.org/stable/c/e3bcd3bf7eeca9570b9fa0b2f8a602c7bcc6b0d0
- https://git.kernel.org/stable/c/9061fbf2230b6fcef042a6f637beae57c2fc93a5
- https://git.kernel.org/stable/c/005771c18c5b2c98cb4e7517661aea460990fd3f
European references
- ENISA EUVD · EUVD-2026-55342
- GCVE · GCVE-0-2026-68241
CERT-FR advisories
- CERTFR-2026-AVI-1432 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.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
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 3c0ec2c2d5948356a22c8f1c08a8087b12a303e7 < 76a1817d31f1a01fc5d9de63cb219e2c10d40400 ; affected 3c0ec2c2d5948356a22c8f1c08a8087b12a303e7 < fae63319ad397666a9c56a17ea1047d2bf9a1e25 ; affected 3c0ec2c2d5948356a22c8f1c08a8087b12a303e7 < 02ceba559412751106c0cfa5cbdb80db50303083 ; affected 3c0ec2c2d5948356a22c8f1c08a8087b12a303e7 < e3bcd3bf7eeca9570b9fa0b2f8a602c7bcc6b0d0 ; affected 3c0ec2c2d5948356a22c8f1c08a8087b12a303e7 < 9061fbf2230b6fcef042a6f637beae57c2fc93a5 ; affected 3c0ec2c2d5948356a22c8f1c08a8087b12a303e7 < 005771c18c5b2c98cb4e7517661aea460990fd3f |
| Linux · Linux | affected 5.8 ; unaffected 0 < 5.8 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.42 ≤ 6.18.* |
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 |