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CVE-2026-31493

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/efa: Fix use of completion ctx after free On admin queue completion handling, if the admin command completed with error we print data from the completion context. The issue is that we already freed the completion context in polling/interrupts handler which means we print data from context in an unknown state (it might be already used again). Change the admin submission flow so alloc/dealloc of the context will be symmetric and dealloc will be called after any potential use of the context.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-04-22 14:16:47.170000
Last modified
2026-10-21 13:18:37.917000
View original CVE JSON 
{
  "id": "CVE-2026-31493",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-04-22T14:16:47.170",
  "lastModified": "2026-10-21T13:18:37.917",
  "vulnStatus": "Modified",
  "cveTags": [],
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/efa: Fix use of completion ctx after free\n\nOn admin queue completion handling, if the admin command completed with\nerror we print data from the completion context. The issue is that we\nalready freed the completion context in polling/interrupts handler which\nmeans we print data from context in an unknown state (it might be\nalready used again).\nChange the admin submission flow so alloc/dealloc of the context will be\nsymmetric and dealloc will be called after any potential use of the\ncontext."
    }
  ],
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          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
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}