CVE-2026-63997
ethtool: module: avoid leaking a netdev ref on module flash errors
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.
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
July 30, 2026, 2:51 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the latest version.
- Ensure module flash operations are handled correctly.
- Verify netdev reference counting.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-63997.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-63997 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-63997
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-63997 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-63997 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e', 'lessThan': 'f7b4513e77f9571dc1041a798b93b5c4a4bfc191', 'versionType': 'git'}, {'status': 'affected', 'version': '32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e', 'lessThan': '61848c83b9132ab839809fe415ba7802a0aca4f6', 'versionType': 'git'}, {'status': 'affected', 'version': '32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e', 'lessThan': '956b134d917fd7e014dc7e39a9b7610c04fcc9ba', 'versionType': 'git'}, {'status': 'affected', 'version': '32b4c8b53ee7799e34a2b1634d32d3ce1e36c44e', 'lessThan': 'fb7f511d62692661846c47f199e0afe25c2982db', 'versionType': 'git'}], 'programFiles': ['net/ethtool/module.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.11'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.11', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.12.93', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.35', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.12', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/ethtool/module.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/61848c83b9132ab839809fe415ba7802a0aca4f6 Added Reference https://git.kernel.org/stable/c/956b134d917fd7e014dc7e39a9b7610c04fcc9ba Added Reference https://git.kernel.org/stable/c/f7b4513e77f9571dc1041a798b93b5c4a4bfc191 Added Reference https://git.kernel.org/stable/c/fb7f511d62692661846c47f199e0afe25c2982db