CVE-2026-98826Medium· 4.7▾ SunlitA flaw was found in the Linux kernel's AC100 Real-Time Clock (RTC) driver. If device initialization fails during driver probing, unmanaged clock provider references remain registered in global system lists while their underlying memory is …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 25.9 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
Last analysed / modified upstream
0.2%
— → 4.7
none → medium
A flaw was found in the Linux kernel's AC100 Real-Time Clock (RTC) driver. If device initialization fails during driver probing, unmanaged clock provider references remain registered in global system lists while their underlying memory is released. Subsequent lookups referencing the affected device can access this freed memory, triggering a use-after-free condition that can lead to a system crash and Denial of Service (DoS).
kernel: kernel: Denial of service via use-after-free in the AC100 RTC driver — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.
Affected:
No fix planned:
Fix deferred
Workarounds / mitigations:
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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