CVE-2026-80954i3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: i3c: Fix unlocked dereference of dev->desc in i3c_device_get_supported_xfer_mode() i3c_device_get_supported_xfer_mode() uses dev->desc to obtain the master controller. However, dev->desc must not be dereferenced unless bus->lock is held, and this function does not take that lock. The function only needs access to the master controller associated with the device's bus. Use dev->bus instead, which is always valid for the lifetime of the device and does not require dereferencing dev->desc.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 256a21743d911f94ce92fe28f793cd586f3860b2 builds before 251db58324ea4792c3f9f692ab09be148e051969; 256a21743d911f94ce92fe28f793cd586f3860b2 builds before 8bed7f4fa710914b7f05fd59998316bfb4d43385 | CNA record |
References
- https://git.kernel.org/stable/c/251db58324ea4792c3f9f692ab09be148e051969
- https://git.kernel.org/stable/c/8bed7f4fa710914b7f05fd59998316bfb4d43385
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.