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CVE-2025-71085 ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr()

🗓️ 13 Jan 2026 15:34:48Reported by LinuxType 
vulnrichment
 vulnrichment
🔗 github.com👁 12 Views

Kernel fix calipso_skbuff_setattr avoids negative headroom to skb, preventing pskb_expand_head.

Related
Affected
Refs
[
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
    "versions": [
      {
        "status": "affected",
        "version": "V3.1.6",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
    "versions": [
      {
        "status": "affected",
        "version": "V3.1.6",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
    "versions": [
      {
        "status": "affected",
        "version": "V3.1.6",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
    "versions": [
      {
        "status": "affected",
        "version": "V3.1.6",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  },
  {
    "vendor": "Siemens",
    "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
    "versions": [
      {
        "status": "affected",
        "version": "V3.1.6",
        "lessThan": "*",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unknown"
  }
]

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11 May 2026 21:54Current
5.7Medium risk
Vulners AI Score5.7
EPSS0.00114
SSVC
12