Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in raid1_run() raid1_run() calls setup_conf() which… (CVE-2026-45888)
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.
AI Analysis
Technical Summary
The Linux kernel's md/raid1 component had a memory leak vulnerability (CVE-2026-45888) caused by incomplete error handling in raid1_run(). Specifically, when raid1_set_limits() fails after a thread is registered via md_register_thread(), the thread is not unregistered, leading to a leak of memory and thread resources. The patch adds md_unregister_thread() to the error path to clean up the thread properly, aligning with other error handling logic. The issue was found through static analysis and code review and was compile tested only.
Potential Impact
This vulnerability results in a memory leak that can degrade system availability over time due to unreleased thread resources. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The fix involves adding md_unregister_thread() in the error path of raid1_run() to prevent the memory leak. Until an official patch is available, monitoring for updates from the Linux kernel maintainers is recommended.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: md/raid1: fix memory leak in raid1_run() raid1_run() calls setup_conf() which… (CVE-2026-45888)
Description
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.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's md/raid1 component had a memory leak vulnerability (CVE-2026-45888) caused by incomplete error handling in raid1_run(). Specifically, when raid1_set_limits() fails after a thread is registered via md_register_thread(), the thread is not unregistered, leading to a leak of memory and thread resources. The patch adds md_unregister_thread() to the error path to clean up the thread properly, aligning with other error handling logic. The issue was found through static analysis and code review and was compile tested only.
Potential Impact
This vulnerability results in a memory leak that can degrade system availability over time due to unreleased thread resources. There is no impact on confidentiality or integrity. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The fix involves adding md_unregister_thread() in the error path of raid1_run() to prevent the memory leak. Until an official patch is available, monitoring for updates from the Linux kernel maintainers is recommended.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-9686-wrhg-jjg6
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-45888"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a3ef7ef27e9c79719034b78
Added to database: 06/26/2026, 22:06:39 UTC
Last enriched: 06/26/2026, 22:49:52 UTC
Last updated: 07/31/2026, 19:30:24 UTC
Views: 7
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