CVE-2026-46103 | can: ucan: fix devres lifetime

In the Linux kernel, the following vulnerability has been resolved: can: ucan: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the control message buffer lifetime so that it is released on driver unbind.

Published: 2026-05-27 Last update: 2026-06-01 Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Conclusion & alert: CVE-2026-46103 is rated Low Risk (5.2/100): low exploitation likelihood (EPSS 0.02%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-46103

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-28 0.02%

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-46103

CVSS metrics for this CVE.

No CVSS data in dataset for this CVE.

Weakness enumeration for CVE-2026-46103

GitHub Security Advisory for CVE-2026-46103

GHSA-m45c-8x83-q7fx · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: can: ucan: fix devres...

OS Trackers for CVE-2026-46103

vendor priority summary link
debian not yet assigned CVE-2026-46103 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2026-46103
redhat low https://access.redhat.com/security/cve/CVE-2026-46103
suse medium CVE-2026-46103 severity moderate: SUSE including 21 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 179 product×package rows across 38 product lines (SUSE Linux Enterprise High Availability Extension 15 SP7, SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, … (38 product lines)): Known Not Affected 179. https://www.suse.com/security/cve/CVE-2026-46103/
ubuntu medium CVE-2026-46103 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1422 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1024, ignored 169, needed 116, released 84, not-affected 23, pending 6. https://ubuntu.com/security/CVE-2026-46103

Affected software / configurations for CVE-2026-46103

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-46103

cvelogic Threat Intelligence