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CVE-2026-1979 mruby JMPNOT-to-JMPIF Optimization vm.c mrb_vm_exec use after free

🗓️ 06 Feb 2026 04:32:09Reported by VulDBType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

Local use after free in mruby up to 3.4.0 via mrb_vm_exec optimization in vm.c.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-1979
6 Feb 202604:32
attackerkb
CNNVD
mruby 资源管理错误漏洞
6 Feb 202600:00
cnnvd
CVE
CVE-2026-1979
6 Feb 202604:32
cve
Debian CVE
CVE-2026-1979
6 Feb 202604:32
debiancve
EUVD
EUVD-2026-5583
6 Feb 202604:32
euvd
NVD
CVE-2026-1979
6 Feb 202605:16
nvd
OSV
DEBIAN-CVE-2026-1979
6 Feb 202605:16
osv
OSV
UBUNTU-CVE-2026-1979
6 Feb 202605:16
osv
Positive Technologies
PT-2026-6673
6 Feb 202600:00
ptsecurity
RedhatCVE
CVE-2026-1979
7 Feb 202607:22
redhatcve
Rows per page
[
  {
    "vendor": "n/a",
    "product": "mruby",
    "versions": [
      {
        "version": "3.0",
        "status": "affected"
      },
      {
        "version": "3.1",
        "status": "affected"
      },
      {
        "version": "3.2",
        "status": "affected"
      },
      {
        "version": "3.3",
        "status": "affected"
      },
      {
        "version": "3.4.0",
        "status": "affected"
      }
    ],
    "cpes": [
      "cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*"
    ],
    "modules": [
      "JMPNOT-to-JMPIF Optimization"
    ]
  }
]

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23 Feb 2026 09:21Current
CVSS 24.3
CVSS 44.8
CVSS 3.15.3
CVSS 35.3
EPSS0.00034
29