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CVE-2026-18839 Popt-devel: popt-static: size_t underflow in singleoptionhelp

🗓️ 05 Aug 2026 20:45:17Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 66 Views

CVE-2026-18839: Integer underflow in popt when formatting help for wide option tables may crash or hide help.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins
Security Bulletin: Multiple vulnerabilities in rpm.rte affect AIX.
12 Oct 202611:41
–ibm
attackerkb
attackerkb
CVE-2026-18839
5 Aug 202620:45
–attackerkb
cve
CVE
CVE-2026-18839
5 Aug 202620:45
–cve
debiancve
Debian CVE
CVE-2026-18839
5 Aug 202620:45
–debiancve
euvd
EUVD
EUVD-2026-53642
5 Aug 202620:45
–euvd
mend
Mend
CVE-2026-18839
5 Aug 202620:45
–mend
mscve
Microsoft CVE
Popt-devel: popt-static: size_t underflow in singleoptionhelp
7 Aug 202608:09
–mscve
nvd
NVD
CVE-2026-18839
5 Aug 202621:16
–nvd
osv_azl
osv_azl
AZL-94511 CVE-2026-18839 affecting package popt 1.19-1
5 Aug 202621:16
–osv_azl
osv_azl
osv_azl
AZL-94668 CVE-2026-18839 affecting package rsync 3.5.0-1
5 Aug 202621:16
–osv_azl
Rows per page
[
  {
    "vendor": "rpm-software-management",
    "product": "popt",
    "versions": [
      {
        "status": "affected",
        "version": "1.13",
        "lessThan": "*",
        "versionType": "semver"
      }
    ],
    "packageName": "popt",
    "collectionURL": "https://github.com/rpm-software-management/popt",
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Hardened Images",
    "collectionURL": "https://catalog.redhat.com/software/containers/",
    "packageName": "popt-main",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "1.19-11.2.hum1",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:hummingbird:1"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 10",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "popt",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:10"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "popt",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "popt",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "popt",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "popt",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "openshift/ose-rhel-coreos-8",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:openshift:4"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat OpenShift Container Platform 4",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "openshift/ose-rhel-coreos-9",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:openshift:4"
    ]
  }
]

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