Description
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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= af4b9467296b9a16ebc008147238070236982b6d, < 12ad4fad748e6e563ff4480f03b89134a41b5c37; >= 64015cbf06e8bb75b81ae95b997e847b55280f7f, < df55842fddbcdb80e6dd16680439c0f780ed592e; >= b71e64ef7ff9443835d1333e3e80ab1e49e5209f, < 141641a70ed337e54487f766ede745fc2ce44c42; >= bf7785434b5d05d940d936b78925080950bd54dd, < ddcf2064d7ec5a8c9afa7cb74442320e443502bc; >= 0fca16c5591534cc1fec8b6181277ee3a3d0f26c, < 26e27b8dcef1e4df6f30d8f25b3304a506d482b3; >= f9b059bda4276f2bb72cb98ec7875a747f042ea2, < caba30eb8bd321c465ecfc7d850ee85f5b353496; >= 95fc36a234da24bbc5f476f8104a5a15f99ed3e3, < c3a28f9cb82425fe0835048ed3677f321e780691; >= 95fc36a234da24bbc5f476f8104a5a15f99ed3e3, < 761b785a0cfbce43761227bc42a7f984f31f8921; >= 5.10.249, < 5.10.265; >= 5.15.199, < 5.15.216; >= 6.1.162, < 6.1.183; >= 6.6.122, < 6.6.148; >= 6.12.68, < 6.12.101; >= 6.18.8, < 6.18.42 |
| Linux | Linux | 6.19 |
References
- https://git.kernel.org/stable/c/12ad4fad748e6e563ff4480f03b89134a41b5c37
- https://git.kernel.org/stable/c/141641a70ed337e54487f766ede745fc2ce44c42
- https://git.kernel.org/stable/c/26e27b8dcef1e4df6f30d8f25b3304a506d482b3
- https://git.kernel.org/stable/c/761b785a0cfbce43761227bc42a7f984f31f8921
- https://git.kernel.org/stable/c/c3a28f9cb82425fe0835048ed3677f321e780691
- https://git.kernel.org/stable/c/caba30eb8bd321c465ecfc7d850ee85f5b353496
- https://git.kernel.org/stable/c/ddcf2064d7ec5a8c9afa7cb74442320e443502bc
- https://git.kernel.org/stable/c/df55842fddbcdb80e6dd16680439c0f780ed592e
Timeline
- Published
- Aug 10, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Received