devlink: fix net namespace reference leak in reload
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 2 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.00168 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.6.152, 6.12.104, 6.18.45 +2Red Hat: 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.6.152, 6.12.104, 6.18.45, 7.1.9, 7.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-74718
- 2026-10-03 Alias added: GHSA-67hf-fh94-4rj7
- 2026-10-29 Affected versions changed · Red Hat
References
Other 5
- https://git.kernel.org/stable/c/7b6552e53426ea0539c667bbc5a524fdf7feae6f
- https://git.kernel.org/stable/c/bf0797b92be591ac71d7c0f610e695caca3c72c9
- https://git.kernel.org/stable/c/7b02c6d2a3cd2cd669f5c16685779f84328ae60c
- https://git.kernel.org/stable/c/eda60c85b4f4c7d66b7141a5fe020b1a7f395341
- https://git.kernel.org/stable/c/1c4dac9bf1d2ac31da63b794bdec697777cbd0fd
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- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2026-74718 · CVE Program
- CVE-2026-74718 · NVD
- FIRST EPSS
- GHSA-67hf-fh94-4rj7 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-74718 · Red Hat security data · CC BY 4.0
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