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CVE-2026-23263io_uring/zcrx: fix page array leak

Description

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.

Timeline

  1. ID reserved

    By Linux

  2. · 2 months later

    Published

  3. · 54 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-23263, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.12% · top 98% of all CVEs (13 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected b84621d96ee0221e0bfbf9f477bbec7a5077c464 – < 64cf3016234ce8a6e4195ed1b2d9e2a1ae41b57d
    • affected b84621d96ee0221e0bfbf9f477bbec7a5077c464 – < 0ae91d8ab70922fb74c22c20bedcb69459579b1c

  • Linux · Linux

    • affected 6.17
    • unaffected < 6.17
    • unaffected 6.18.10 – ≤ 6.18.*
    • unaffected 6.19 – ≤ *

References

References2

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .