CVE-2026-74451
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
In the Linux kernel, the drm/panthor graphics driver added validation of firmware interface structure sizes. The iface_fw_to_cpu_addr() function only checked that the MCU virtual address points inside the shared section, but did not check that the entire structure fits, which could lead to out-of-bounds accesses.
Risk Assessment
Out-of-bounds access can lead to information disclosure or system crashes, especially with malicious firmware.
Recommendation
Apply the kernel patch that passes the expected object size to iface_fw_to_cpu_addr() and rejects ranges that do not fit entirely in the shared section.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: validate firmware interface structure sizes iface_fw_to_cpu_addr() only checks that the firmware-provided MCU virtual address points inside the shared section. The returned pointer is later used as a full firmware interface structure, so accepting an address near the end of the shared section can still lead to out-of-bounds accesses. Pass the expected object size to iface_fw_to_cpu_addr() and reject ranges that do not fit entirely in the shared section.