intel_th: fix MSC output device reference leak
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- 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: intel_th: fix MSC output device reference leak intel_th_output_open() looks up the output device with bus_find_device_by_devt(), which returns the device with a reference that must be dropped after use. commit 95fc36a234da ("intel_th: fix device leak on output open()") attempted to drop the reference from intel_th_output_release(). However, a successful open replaces file->f_op with the output driver file operations before returning, so close runs the output driver release callback instead. For MSC outputs, close runs intel_th_msc_release(), which only removes the per-file iterator and does not drop the device reference taken by intel_th_output_open(). Consequently, every successful MSC output open leaks one device reference. Drop the device reference from intel_th_msc_release(), which is the release path actually used for MSC output files. Remove the now-unused intel_th_output_release() callback from intel_th_output_fops.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.10.249 to before 5.10.265; 5.15.199 to before 5.15.216; 6.1.162 to before 6.1.183; 6.6.122 to before 6.6.148; 6.12.68 to before 6.12.101; 6.18.8 to before 6.18.42 | 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42 | Patch available | CNA |
| Linux | Linux | 6.19 and later | 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6, 7.2 | Patch available | CNA |
- Linux VendorLinux Affected 5.10.249 to before 5.10.265; 5.15.199 to before 5.15.216; 6.1.162 to before 6.1.183; 6.6.122 to before 6.6.148; 6.12.68 to before 6.12.101; 6.18.8 to before 6.18.42 Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42 Patch available CNA
- Linux VendorLinux Affected 6.19 and later Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6, 7.2 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42
- Fix · CNA Linux (Linux) Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux for NVIDIA 26
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68180
- 2026-10-03 Alias added: GHSA-qq33-46pr-rg4r
- 2026-10-30 Affected versions changed · Red Hat
- 2026-11-06 CISA SSVC decision points changed
References
Other 8
- https://git.kernel.org/stable/c/12ad4fad748e6e563ff4480f03b89134a41b5c37
- https://git.kernel.org/stable/c/df55842fddbcdb80e6dd16680439c0f780ed592e
- https://git.kernel.org/stable/c/141641a70ed337e54487f766ede745fc2ce44c42
- https://git.kernel.org/stable/c/ddcf2064d7ec5a8c9afa7cb74442320e443502bc
- https://git.kernel.org/stable/c/26e27b8dcef1e4df6f30d8f25b3304a506d482b3
- https://git.kernel.org/stable/c/caba30eb8bd321c465ecfc7d850ee85f5b353496
- https://git.kernel.org/stable/c/c3a28f9cb82425fe0835048ed3677f321e780691
- https://git.kernel.org/stable/c/761b785a0cfbce43761227bc42a7f984f31f8921
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Sources
- CVE-2026-68180 · CVE Program
- CVE-2026-68180 · NVD
- FIRST EPSS
- GHSA-qq33-46pr-rg4r · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68180 · Red Hat security data · CC BY 4.0
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