CVE-2026-22999
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_qfq: do not free existing class in qfq_change_class() Fixes qfq_change_class() error case. cl->qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-01-25 15:15:54.753000
Last modified
2026-10-19 19:17:31.557000
View original CVE JSON
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"id": "CVE-2026-22999",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-01-25T15:15:54.753",
"lastModified": "2026-10-19T19:17:31.557",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_qfq: do not free existing class in qfq_change_class()\n\nFixes qfq_change_class() error case.\n\ncl->qdisc and cl should only be freed if a new class and qdisc\nwere allocated, or we risk various UAF."
},
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/sched: sch_qfq: no liberar la clase existente en qfq_change_class()\n\nCorrige el caso de error de qfq_change_class().\n\ncl->qdisc y cl solo deben liberarse si se asignaron una nueva clase y qdisc, o nos arriesgamos a varios UAF."
}
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