CVE-2026-45888 | md/raid1: fix memory leak in raid1_run()

In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in raid1_run() raid1_run() calls setup_conf() which registers a thread via md_register_thread(). If raid1_set_limits() fails, the previously registered thread is not unregistered, resulting in a memory leak of the md_thread structure and the thread resource itself. Add md_unregister_thread() to the error path to properly cleanup the thread, which aligns with the error handling logic of other paths in this function. Compile tested only. Issue found using a prototype static analysis tool and code review.

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

Conclusion & alert: CVE-2026-45888 is rated Low Risk (10/100): low exploitation likelihood (EPSS 0.20%). 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-2026-45888

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 2026-06-15 0.02% 0.20% +0.18%
2 2026-05-28 0.02%

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-45888

CVSS metrics for this CVE.

No CVSS data in dataset for this CVE.

Weakness enumeration for CVE-2026-45888

GitHub Security Advisory for CVE-2026-45888

GHSA-9686-wrhg-jjg6 · Severity: unknown — In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in...

OS Trackers for CVE-2026-45888

vendor priority summary link
debian unimportant CVE-2026-45888 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-45888
redhat low https://access.redhat.com/security/cve/CVE-2026-45888
suse https://www.suse.com/security/cve/CVE-2026-45888/
ubuntu medium CVE-2026-45888 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, not-affected 122, released 84, needed 22, needs-triage 1. https://ubuntu.com/security/CVE-2026-45888

Affected software / configurations for CVE-2026-45888

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-45888

cvelogic Threat Intelligence