CVE-2026-72403ALSA: FCP: Fix NULL pointer dereference in interface lookup
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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: ALSA: FCP: Fix NULL pointer dereference in interface lookup A malformed USB device can provide a vendor-specific interface without any endpoint descriptors. fcp_find_fc_interface() currently selects the first vendor-specific interface and reads endpoint 0 from it, without checking whether the interface actually has any endpoints. When bNumEndpoints is zero, no endpoint array is allocated for the parsed alternate setting, so get_endpoint(..., 0) yields an invalid endpoint descriptor pointer. Dereferencing it through usb_endpoint_num() then triggers a NULL pointer dereference. Skip vendor-specific interfaces that do not have any endpoints.
- CVSS
- Not yet scored
- 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
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 46757a3e7d50dac923888e7fbe68377736f13c70 before f28d7b5f1578a7501ab17b10643ed1e4f729187e; 46757a3e7d50dac923888e7fbe68377736f13c70 builds before 3ab06151ffcb8c3aeb8f78508658b6c0f05be932; from 46757a3e7d50dac923888e7fbe68377736f13c70 before e1e31e0ec8a609e17fd2e86b77bc00d9cbb24d7c | CNA record |
References
- https://git.kernel.org/stable/c/f28d7b5f1578a7501ab17b10643ed1e4f729187e
- https://git.kernel.org/stable/c/3ab06151ffcb8c3aeb8f78508658b6c0f05be932
- https://git.kernel.org/stable/c/e1e31e0ec8a609e17fd2e86b77bc00d9cbb24d7c
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.