CVE-2026-43328
HighCVSS 7.8Summary
W jądrze Linuxa zidentyfikowano podatność związana z podwójnym zwolnieniem pamięci w funkcji cpufreq_dbs_governor_init(). Problem występuje, gdy kobject_init_and_add() kończy się niepowodzeniem, co prowadzi do wielokrotnego wywołania funkcji zwalniającej pamięć.
Risk Assessment
Podwójne zwolnienie pamięci może prowadzić do nieprzewidywalnych zachowań systemu, w tym do awarii lub naruszenia integralności danych. Organizacje powinny być świadome ryzyka związanego z używaniem podatnych wersji jądra.
Recommendation
Zaleca się aktualizację jądra Linuxa do najnowszej wersji, w której ta podatność została naprawiona, aby uniknąć potencjalnych problemów z pamięcią.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: cpufreq: governor: fix double free in cpufreq_dbs_governor_init() error path When kobject_init_and_add() fails, cpufreq_dbs_governor_init() calls kobject_put(&dbs_data->attr_set.kobj). The kobject release callback cpufreq_dbs_data_release() calls gov->exit(dbs_data) and kfree(dbs_data), but the current error path then calls gov->exit(dbs_data) and kfree(dbs_data) again, causing a double free. Keep the direct kfree(dbs_data) for the gov->init() failure path, but after kobject_init_and_add() has been called, let kobject_put() handle the cleanup through cpufreq_dbs_data_release().