Back
CVE-2026-63997ethtool: module: avoid leaking a netdev ref on module flash errors
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% 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: ethtool: module: avoid leaking a netdev ref on module flash errors module_flash_fw_schedule() is missing undo for setting the "in_progress" flag and taking the netdev reference. Delay taking these, the device can't disappear while we are holding rtnl_lock.
Timeline
ID reserved
By Linux
Published
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)
- 0.12% · top 98% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e – < f7b4513e77f9571dc1041a798b93b5c4a4bfc191
- affected 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e – < 61848c83b9132ab839809fe415ba7802a0aca4f6
- affected 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e – < 956b134d917fd7e014dc7e39a9b7610c04fcc9ba
- affected 32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e – < fb7f511d62692661846c47f199e0afe25c2982db
- affected 6.11
- unaffected < 6.11
- unaffected 6.12.93 – ≤ 6.12.*
- unaffected 6.18.35 – ≤ 6.18.*
- unaffected 7.0.12 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References4
- https://git.kernel.org/stable/c/f7b4513e77f9571dc1041a798b93b5c4a4bfc191 (opens in a new tab)
- https://git.kernel.org/stable/c/61848c83b9132ab839809fe415ba7802a0aca4f6 (opens in a new tab)
- https://git.kernel.org/stable/c/956b134d917fd7e014dc7e39a9b7610c04fcc9ba (opens in a new tab)
- https://git.kernel.org/stable/c/fb7f511d62692661846c47f199e0afe25c2982db (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-2026-45570 (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-2026-63997)Record last updated .