CVE-2026-43090

kernel: xfrm: fix refcount leak in xfrm_migrate_policy_find

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · May 6, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel. A memory leak can occur in the xfrm (IP eXtensible FRamework) subsystem due to a reference count imbalance. This issue arises from a double call to xfrm_pol_hold_rcu() within the xfrm_migrate_policy_find() function, leading to unreferenced objects and potential resource exhaustion over time.

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-911 · Improper Update of Reference Count