CVE-2026-46182

MEDIUM EPSS 2.6%
Published May 28, 20261mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 28, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥6.18  –  <6.18.30
linuxlinux_kernel*≥6.19  –  <7.0.7
linuxlinux_kernel7.1any
linuxlinux_kernel7.1any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/0479b6e9f999cc1cbad7d9f09f574fc387e605d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cefeed44296261173a806bef988b26bc565da4be
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f88f8e4485b437e0a2f96a7ff1f88aa22d925659
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0479b6e9f999cc1cbad7d9f09f574fc387e605d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cefeed44296261173a806bef988b26bc565da4be
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f88f8e4485b437e0a2f96a7ff1f88aa22d925659
    Patch