Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-46182

In the Linux kernel, the following vulnerability has been resolved: pseries/papr-hvpipe: Prevent kernel stack memory leak to userspace The hdr variable is allocated on the stack and only hdr.version and hdr.flags are initialized explicitly. Because the struct papr_hvpipe_hdr contains reserved padding bytes (reserved[3] and reserved2[40]), these could leak the uninitialized bytes to userspace after copy_to_user(). This patch fixes that by initializing the whole struct to 0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.2%
CVSS Severity
CVSS v3 Score 5.5
Products affected by CVE-2026-46182


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