tcp_metrics: use dst_dev_net_rcu()
Priority LOW 38Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: tcp_metrics: use dst_dev_net_rcu() Replace three dst_dev() with a lockdep enabled helper.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00492 42nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.191, 6.6.160, 6.12.63 +2Red Hat: 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.191, 6.6.160, 6.12.63, 6.17.3, 6.18
Vendor assessments
Red Hat
Red Hat rating: Moderate. 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 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40075
- 2026-10-03 Alias added: GHSA-447q-wwcf-54f8
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-21 Fix available: Linux/[email protected], Linux/Linux@7012bea5622396b37566fbdc059f7c6a6c279d74 · CNA
- 2026-10-21 1 new reference · CNA
- 2026-10-30 Fix available: Linux/Linux@23261817e955ebeb91d7c5c667d09fa415eb88b4, Linux/[email protected] · CNA
- 2026-10-30 1 new reference · CNA
References
Other 5
- https://git.kernel.org/stable/c/23261817e955ebeb91d7c5c667d09fa415eb88b4
- https://git.kernel.org/stable/c/7012bea5622396b37566fbdc059f7c6a6c279d74
- https://git.kernel.org/stable/c/4b89397807eb04986427c4786d065e9442834ad4
- https://git.kernel.org/stable/c/07613a95326ebad2d1b88d883cd72546025a4f3e
- https://git.kernel.org/stable/c/50c127a69cd6285300931853b352a1918cfa180f
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- 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-2025-40075 · CVE Program
- CVE-2025-40075 · NVD
- FIRST EPSS
- GHSA-447q-wwcf-54f8 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40075 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences