CVE-2026-23259 (GCVE-0-2026-23259)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:41 – Updated: 2026-03-19 16:01
VLAI?
Title
io_uring/rw: free potentially allocated iovec on cache put failure
Summary
In the Linux kernel, the following vulnerability has been resolved: io_uring/rw: free potentially allocated iovec on cache put failure If a read/write request goes through io_req_rw_cleanup() and has an allocated iovec attached and fails to put to the rw_cache, then it may end up with an unaccounted iovec pointer. Have io_rw_recycle() return whether it recycled the request or not, and use that to gauge whether to free a potential iovec or not.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a9165b83c1937eeed1f0c731468216d6371d647f , < 1d5f2329ab4df65c2ee011b986d8a6e05ad0f67c (git)
Affected: a9165b83c1937eeed1f0c731468216d6371d647f , < 4b9748055457ac3a0710bf210c229d01ea1b01b9 (git)
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    Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: free potentially allocated iovec on cache put failure\n\nIf a read/write request goes through io_req_rw_cleanup() and has an\nallocated iovec attached and fails to put to the rw_cache, then it may\nend up with an unaccounted iovec pointer. Have io_rw_recycle() return\nwhether it recycled the request or not, and use that to gauge whether to\nfree a potential iovec or not."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-19T16:01:03.743Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/4b9748055457ac3a0710bf210c229d01ea1b01b9"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23259",
    "datePublished": "2026-03-18T17:41:05.827Z",
    "dateReserved": "2026-01-13T15:37:45.990Z",
    "dateUpdated": "2026-03-19T16:01:03.743Z",
    "state": "PUBLISHED"
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  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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