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CVE-2025-37948

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs A malicious BPF program may manipulate the branch history to influence what the hardware speculates will happen next. On exit from a BPF program, emit the BHB mititgation sequence. This is only applied for 'classic' cBPF programs that are loaded by seccomp.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-05-20 16:15:32.800000
Last modified
2026-11-05 21:17:59.223000
View original CVE JSON
{
  "id": "CVE-2025-37948",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-05-20T16:15:32.800",
  "lastModified": "2026-11-05T21:17:59.223",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: bpf: Add BHB mitigation to the epilogue for cBPF programs\n\nA malicious BPF program may manipulate the branch history to influence\nwhat the hardware speculates will happen next.\n\nOn exit from a BPF program, emit the BHB mititgation sequence.\n\nThis is only applied for 'classic' cBPF programs that are loaded by\nseccomp."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: arm64: bpf: Añadir mitigación de BHB al epílogo de programas cBPF. Un programa BPF malicioso puede manipular el historial de ramificaciones para influir en lo que el hardware especula que ocurrirá a continuación. Al salir de un programa BPF, se emite la secuencia de mitigación de BHB. Esto solo se aplica a programas cBPF clásicos cargados por seccomp."
    }
  ],
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  "metrics": {
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        "source": "[email protected]",
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          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-05T20:45:35.502598Z",
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          "role": "CISA Coordinator",
          "version": "2.0.3"
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  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
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    }
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