CVE-2026-23259
Full vulnerability record from the local CVENow database.
Description
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
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-03-18 18:16:24.353000
Last modified
2026-10-21 13:18:35.290000
View original CVE JSON
{
"id": "CVE-2026-23259",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-03-18T18:16:24.353",
"lastModified": "2026-10-21T13:18:35.290",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"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."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nio_uring/rw: liberar iovec potencialmente asignado en caso de fallo al colocar en la caché\n\nSi una solicitud de lectura/escritura pasa por io_req_rw_cleanup() y tiene un iovec asignado adjunto y falla al colocarlo en la rw_cache, entonces puede terminar con un puntero iovec no contabilizado. Hacer que io_rw_recycle() devuelva si recicló la solicitud o no, y usar eso para determinar si liberar un iovec potencial o no."
}
],
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"affectedData": [
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"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
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