CVE-2023-53292
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
W jądrze Linuxa naprawiono podatność, która mogła prowadzić do dereferencji wskaźnika NULL w funkcji blk_mq_elv_switch_none. Problem występował po zablokowaniu q->sysfs_lock, gdy q->elevator mogło stać się NULL w wyniku zmiany windy.
Risk Assessment
Podatność ta mogła prowadzić do awarii systemu lub nieprzewidzianego zachowania, co stwarzało ryzyko dla stabilności i bezpieczeństwa systemu operacyjnego.
Recommendation
Zaleca się aktualizację jądra Linuxa do najnowszej wersji, aby usunąć tę podatność i zapewnić stabilność systemu.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none After grabbing q->sysfs_lock, q->elevator may become NULL because of elevator switch. Fix the NULL dereference on q->elevator by checking it with lock.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS