CVE-2026-74718
In the Linux kernel, the following vulnerability has been resolved:
devlink: fix net namespace reference leak in reload
devlink_nl_reload_doit() calls devlink_netns_get(), which returns a net
with a held reference. When the requested namespace differs from the
current one and the reload action is not DRIVER_REINIT, the function
returns -EOPNOTSUPP without releasing the reference. Add the missing
put_net() on this error path.
CSIRTS triage
- What
- The devlink reload function leaks network namespace references.
- Who is affected
- Systems running affected Linux kernel versions using devlink reload functionality.
- Urgency
- Medium severity (CVSS 4.4); not currently exploited but causes resource leaks.
- Action
- Update to a patched Linux kernel version addressing CVE-2026-74718.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownCVE-2026-74718: In the Linux kernel, the following vulnerability has been resolved: devlink: fix net namespace…nvd · 2026-08-22
- mediumCVE-2026-74718: devlink: fix net namespace reference leak in reloadmsrc · 2026-08-11
External references
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