CVE-2026-46182
pseries/papr-hvpipe: Prevent kernel stack memory leak to userspace
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 28, 2026 |
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Affected Versions
Linux / Linux
cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86 < 0479b6e9f999cc1cbad7d9f09f574fc387e605d5 cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86 < f88f8e4485b437e0a2f96a7ff1f88aa22d925659 cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86 < cefeed44296261173a806bef988b26bc565da4be
Linux / Linux
6.18