CVE-2026-22999 (GCVE-0-2026-22999)

Vulnerability from cvelistv5 – Published: 2026-01-25 14:36 – Updated: 2026-01-25 14:36
VLAI?
Title
net/sched: sch_qfq: do not free existing class in qfq_change_class()
Summary
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < 362e269bb03f7076ba9990e518aeddb898232e50 (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < e9d8f11652fa08c647bf7bba7dd8163241a332cd (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < 3879cffd9d07aa0377c4b8835c4f64b4fb24ac78 (git)
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    Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 6.12.67 , ≤ 6.12.* (semver)
Unaffected: 6.18.7 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc6 , ≤ * (original_commit_for_fix)
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