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CVE-2026-72085 scsi: xen: scsiback: Free unsubmitted command instead of double-putting it

🗓️ 15 Aug 2026 05:52:33Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 10 Views

pvSCSI guest underflows se_cmd refcount in scsiback error paths, leaking tags and panicking host.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-72085
15 Aug 202605:52
cve
debiancve
Debian CVE
CVE-2026-72085
15 Aug 202600:00
debiancve
euvd
EUVD
EUVD-2026-59043
15 Aug 202605:52
euvd
nvd
NVD
CVE-2026-72085
15 Aug 202606:21
nvd
osv
OSV
DEBIAN-CVE-2026-72085
15 Aug 202606:21
osv
ptsecurity
Positive Technologies
PT-2026-72274
15 Aug 202600:00
ptsecurity
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-72085
15 Aug 202600:00
nessus
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/xen/xen-scsiback.c"
    ],
    "versions": [
      {
        "version": "2dbcdf33dbf61f44b29adb52338282c3d7840d0e",
        "lessThan": "9c0f6894982b1f13bda220707497b25ac9c95bdb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2dbcdf33dbf61f44b29adb52338282c3d7840d0e",
        "lessThan": "a13b789497a7fdd27d4d63f5c69d23db706ef0fe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2dbcdf33dbf61f44b29adb52338282c3d7840d0e",
        "lessThan": "fa588f28401102652068c4cc75e135507f4b5106",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2dbcdf33dbf61f44b29adb52338282c3d7840d0e",
        "lessThan": "fcd64d4d97af5d9736f31040f8ed8cd4c17e4c45",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2dbcdf33dbf61f44b29adb52338282c3d7840d0e",
        "lessThan": "f1516c56ac540da1769f264c3cfefe4499548a5d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2dbcdf33dbf61f44b29adb52338282c3d7840d0e",
        "lessThan": "1e97c404e44991fb087c38ccd7414f2d326f9b74",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2dbcdf33dbf61f44b29adb52338282c3d7840d0e",
        "lessThan": "ca978f8a93d4d36841839bf2847d29b88c2591d6",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/xen/xen-scsiback.c"
    ],
    "versions": [
      {
        "version": "4.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.212",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.40",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.5",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc4",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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15 Aug 2026 05:52Current
EPSS0.00205
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