CVE-2026-45888md/raid1: fix memory leak in raid1_run()
- 5.5MediumCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 95% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 95% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 97894f7d3c2966164516a8a5109674763d3a55e1 – < c94fd6e8a71efd047ff36930e840f3c25679e136
- affected 97894f7d3c2966164516a8a5109674763d3a55e1 – < ec10e3dc93994b87adf7c759a4639fe34013989a
- affected 97894f7d3c2966164516a8a5109674763d3a55e1 – < b37588b0282a2b3cdda9db1d53712745ce66dea0
- affected 97894f7d3c2966164516a8a5109674763d3a55e1 – < 6abc7d5dcf0ee0f85e16e41c87fbd06231f28753
- affected 6.9
- unaffected < 6.9
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.14 – ≤ 6.18.*
- unaffected 6.19.4 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References4
- https://git.kernel.org/stable/c/c94fd6e8a71efd047ff36930e840f3c25679e136 (opens in a new tab)
- https://git.kernel.org/stable/c/ec10e3dc93994b87adf7c759a4639fe34013989a (opens in a new tab)
- https://git.kernel.org/stable/c/b37588b0282a2b3cdda9db1d53712745ce66dea0 (opens in a new tab)
- https://git.kernel.org/stable/c/6abc7d5dcf0ee0f85e16e41c87fbd06231f28753 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32354 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-45888)Record last updated .