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CVE-2026-23263

Status: AnalyzedMedium (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

io_uring/zcrx: fix page array leak

Technical details traces, logs and code from the original report
d9f595b9a65e ("io_uring/zcrx: fix leaking pages on sg init fail") fixed
a page leakage but didn't free the page array, release it as well.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Linux — Linux Kernel

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-23263",
  "cveTags": [],
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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  "published": "2026-03-18T18:16:24.950",
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  "weaknesses": [
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      "description": [
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          "value": "CWE-401"
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/zcrx: fix page array leak\n\nd9f595b9a65e (\"io_uring/zcrx: fix leaking pages on sg init fail\") fixed\na page leakage but didn't free the page array, release it as well."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nio_uring/zcrx: corregir fuga de array de páginas\n\nd9f595b9a65e ('io_uring/zcrx: corregir la fuga de páginas al fallar la inicialización de sg') corrigió una fuga de páginas pero no liberó el array de páginas, libéralo también."
    }
  ],
  "lastModified": "2026-06-17T10:21:12.690",
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