CVE-2026-46182
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-05-28
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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.
Weakness Classification (1)
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86 < 0479b6e9f999cc1cbad7d9f09f574fc387e605d5 |
| Linux | Linux | cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86 < f88f8e4485b437e0a2f96a7ff1f88aa22d925659 |
| Linux | Linux | cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86 < cefeed44296261173a806bef988b26bc565da4be |
| Linux | Linux | 6.18 |
| linux | linux_kernel | 6.18 – 6.18.30 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |