5.5

CVE-2026-46182: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-46182DEBIAN-CVE-2026-46182
Published 28-05-2026Last modified 14-06-2026
Open JSON

Vulnerability summary

CVE-2026-46182 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 12
OPENSUSE-SU-2026:10954-1USN-8566-1USN-8568-1USN-8569-1USN-8593-1USN-8603-1

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 14-06-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.03 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu106 products
  • linux< 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86, < 0479b6e9f999cc1cbad7d9f09f574fc387e605d5 | ≥ cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86, < f88f8e4485b437e0a2f96a7ff1f88aa22d925659 | ≥ cebdb522fd3edd1fe05f7b4a74a27da7dd0f8d86, < cefeed44296261173a806bef988b26bc565da4be | 6.18
  • linux_kernel≥ 6.18, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1 | 7.1:rc2
Debian1 product
  • linux< 7.0.7-1

3 vendors · 109 products

References

18 links
Show all 18 references