Answer in brief
CVE-2026-80952 records a High severity (CVSS 7.8) vulnerability in i3c: master: Fix info leak and UAF in device unregister path. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49 || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <94fb9786d67a8f8b899e77381620f86bad94fdf7 || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <4837be0f9ac2efe5e83b35a696b6242c473d280c || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <d2c743efd2d1ee64e94324664808f623dd865872 | c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49, 94fb9786d67a8f8b899e77381620f86bad94fdf7, 4837be0f9ac2efe5e83b35a696b6242c473d280c, d2c743efd2d1ee64e94324664808f623dd865872 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| Linux/Linuxgeneric | >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <334cfb5e285cece5dc49fb3fb8ea9b70b2cb5d7e || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <109995153898454c7795c2c299fd0a0b57456a4b || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <c64daaaba08e490c8347ff60aacac4dd51249f91 || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <ef72ff6650c4ebf2b444708d84df66db42f262d9 || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49 || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <94fb9786d67a8f8b899e77381620f86bad94fdf7 || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <4837be0f9ac2efe5e83b35a696b6242c473d280c || >=3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 <d2c743efd2d1ee64e94324664808f623dd865872 | 334cfb5e285cece5dc49fb3fb8ea9b70b2cb5d7e, 109995153898454c7795c2c299fd0a0b57456a4b, c64daaaba08e490c8347ff60aacac4dd51249f91, ef72ff6650c4ebf2b444708d84df66db42f262d9, c16b6f25e0cc2dd1055dde1256cbf5a9e888cf49, 94fb9786d67a8f8b899e77381620f86bad94fdf7, 4837be0f9ac2efe5e83b35a696b6242c473d280c, d2c743efd2d1ee64e94324664808f623dd865872 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix info leak and UAF in device unregister path i3c_master_unregister_i3c_devs() clears i3cdev->dev->desc before calling device_unregister(). During device_unregister(), device_del() emits a KOBJ_REMOVE uevent and unbinds the driver while the device descriptor is still expected to be valid. As a result, i3c_device_uevent() and a racing modalias_show() can observe a NULL desc and fall back to an uninitialized stack struct i3c_device_info, leaking kernel stack contents in the generated modalias. Driver .remove() callbacks may also encounter an unexpected NULL desc during unbind. Keep desc valid until device_unregister() has completed. Since device_unregister() drops the device reference and may free the device, take an extra reference with get_device() before unregistering. Clear desc afterwards and release the extra reference with put_device(). This preserves the release-time invariant that desc must be NULL while avoiding both the information leak and a potential use-after-free from writing desc after the device has been released.
Quoted source text, attributed separately from HOL analysis.