CVE-2026-23263

MEDIUMNVD 5.5

5.5

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

io_uring/zcrx: fix page array leak

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 v3: 5.5
EG Score: 0.0(none)
EPSS: 5.6%
KEV: Not listed

Published

March 18, 2026

Last Modified

May 22, 2026

References (2)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ae91d8ab70922fb74c22c20bedcb69459579b1c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64cf3016234ce8a6e4195ed1b2d9e2a1ae41b57d

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-401Missing Release of Memory after Effective Lifetime (Memory Leak)

Data Freshness Timeline

(refreshed 18× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-22 21:16 UTCepss_batch
2026-05-22 21:16 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-23263?

CVE-2026-23263 is a medium vulnerability published on March 18, 2026. In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix page array leak 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.

When was CVE-2026-23263 disclosed?

CVE-2026-23263 was first published in the National Vulnerability Database on March 18, 2026, with the most recent update on May 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-23263 actively exploited?

CVE-2026-23263 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-23263?

CVE-2026-23263 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.

How do I remediate CVE-2026-23263?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23263, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-23263

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-23263?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)