CVE-2026-68180
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.
How to fix
- Linux Linux12ad4fad748e6e563ff4480f03b89134a41b5c37, df55842fddbcdb80e6dd16680439c0f780ed592e, 141641a70ed337e54487f766ede745fc2ce44c42, ddcf2064d7ec5a8c9afa7cb74442320e443502bc, 26e27b8dcef1e4df6f30d8f25b3304a506d482b3, caba30eb8bd321c465ecfc7d850ee85f5b353496, c3a28f9cb82425fe0835048ed3677f321e780691, 761b785a0cfbce43761227bc42a7f984f31f8921, 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | af4b9467296b9a16ebc008147238070236982b6d ≤ v < 12ad4fad748e6e563ff4480f03b89134a41b5c37, 64015cbf06e8bb75b81ae95b997e847b55280f7f ≤ v < df55842fddbcdb80e6dd16680439c0f780ed592e, b71e64ef7ff9443835d1333e3e80ab1e49e5209f ≤ v < 141641a70ed337e54487f766ede745fc2ce44c42, bf7785434b5d05d940d936b78925080950bd54dd ≤ v < ddcf2064d7ec5a8c9afa7cb74442320e443502bc, 0fca16c5591534cc1fec8b6181277ee3a3d0f26c ≤ v < 26e27b8dcef1e4df6f30d8f25b3304a506d482b3, f9b059bda4276f2bb72cb98ec7875a747f042ea2 ≤ v < caba30eb8bd321c465ecfc7d850ee85f5b353496, 95fc36a234da24bbc5f476f8104a5a15f99ed3e3 ≤ v < c3a28f9cb82425fe0835048ed3677f321e780691, 95fc36a234da24bbc5f476f8104a5a15f99ed3e3 ≤ v < 761b785a0cfbce43761227bc42a7f984f31f8921, 5.10.249 ≤ v < 5.10.265, 5.15.199 ≤ v < 5.15.216, 6.1.162 ≤ v < 6.1.183, 6.6.122 ≤ v < 6.6.148, 6.12.68 ≤ v < 6.12.101, 6.18.8 ≤ v < 6.18.42, 6.19 | 12ad4fad748e6e563ff4480f03b89134a41b5c37, df55842fddbcdb80e6dd16680439c0f780ed592e, 141641a70ed337e54487f766ede745fc2ce44c42, ddcf2064d7ec5a8c9afa7cb74442320e443502bc, 26e27b8dcef1e4df6f30d8f25b3304a506d482b3, caba30eb8bd321c465ecfc7d850ee85f5b353496, c3a28f9cb82425fe0835048ed3677f321e780691, 761b785a0cfbce43761227bc42a7f984f31f8921, 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42 |
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