Answer in brief
CVE-2026-64329 records a High severity (CVSS 7.8) vulnerability in usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <f1adeb1ff8bef1467d6961059810795d02bbad5d || >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <99381e762273a2410a3f0216000be32b013c0ea9 || >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <1a160076d3d0dcd4a98a4599ad96eec0790b099b || >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <c32df11147822d22facee8fa30c2e8971d12f426 || >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <86c9ee928c4a370e323e432aaf8dca79c4ba7c85 || >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <f5c772b76bbd95de8be51cf849c6098f6af6fcf9 || >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <dbb500bad02146b388041877574829016591ddc8 || >=e32fd989ac1c45f993fbe89ad0a89aa9ea6993d2 <1f0bdc2884b67de337215079bba166df0cdf4ac5 | f1adeb1ff8bef1467d6961059810795d02bbad5d, 99381e762273a2410a3f0216000be32b013c0ea9, 1a160076d3d0dcd4a98a4599ad96eec0790b099b, c32df11147822d22facee8fa30c2e8971d12f426, 86c9ee928c4a370e323e432aaf8dca79c4ba7c85, f5c772b76bbd95de8be51cf849c6098f6af6fcf9, dbb500bad02146b388041877574829016591ddc8, 1f0bdc2884b67de337215079bba166df0cdf4ac5 |
| Linux/Linuxgeneric | 5.5 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 11, 2026
In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: ccg: Fix use-after-free of ucsi on remove The threaded IRQ handler ccg_irq_handler() calls ucsi_notify_common(), which on a connector-change event calls ucsi_connector_change() and schedules connector work. In ucsi_ccg_remove(), ucsi_destroy() frees uc->ucsi (kfree) before free_irq() is called, so a handler invocation already in flight may access the freed object after ucsi_destroy(). CPU 0 (remove) | CPU 1 (threaded IRQ) ucsi_destroy(uc->ucsi) | ccg_irq_handler() kfree(ucsi) // FREE | ucsi_notify_common(uc->ucsi) // USE Move free_irq() before ucsi_destroy() in the remove path. It is kept after ucsi_unregister(): ucsi_unregister() cancels connector work whose handler issues GET_CONNECTOR_STATUS through ucsi_send_command_common(), which waits for a completion that is signalled from the IRQ handler, so the IRQ must stay active until that work has been cancelled. The probe error path already orders free_irq() before ucsi_destroy(). This bug was found by static analysis.
Quoted source text, attributed separately from HOL analysis.