MinorCritical vulnerability

CVE-2026-54436 (CVSS 7.4)

NVD · officialPublished Nov 10, 2026Risk 23/100

Heap-based Buffer Overflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could allow an attacker with local access to cause data tampering, arbitrary code execution, or a crash in the Character I/O device driver.

Technical details

CVSS

7.4

AV:LocalAC:HighPR:NoneUI:NoneC:HighI:HighA:High

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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