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CVE-2026-11985 Cross-thread FPU register leak on ARM when FPU enabled without register sharing

🗓️ 11 Aug 2026 04:56:59Reported by zephyrType 
cvelist
 cvelist
🔗 www.cve.org👁 9 Views

Zephyr ARM FPU enabled without sharing leaks callee-saved FP registers across thread switches.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-11985
11 Aug 202604:56
attackerkb
cve
CVE
CVE-2026-11985
11 Aug 202604:56
cve
euvd
EUVD
EUVD-2026-55936
11 Aug 202604:56
euvd
nvd
NVD
CVE-2026-11985
11 Aug 202605:17
nvd
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "programFiles": [
      "arch/Kconfig",
      "arch/arm/core/Kconfig",
      "arch/arm/core/cortex_a_r/thread.c",
      "arch/arm/core/cortex_m/thread.c"
    ],
    "versions": [
      {
        "version": "1.13.0",
        "status": "affected",
        "versionType": "semver",
        "lessThanOrEqual": "4.4.1"
      }
    ]
  }
]

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