CVE-2026-31671

kernel: xfrm_user: fix info leak in build_report()

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · April 24, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's xfrm_user component. This vulnerability allows a local attacker to disclose sensitive information. The xfrm_user_report structure contains uninitialized padding bytes that are copied to userspace, leading to an information leak.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-908 · Use of Uninitialized Resource