CVE-2026-74341
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
In the Linux kernel wifi driver wcn36xx, there is a heap overflow due to lack of validation of the HAL response length from firmware. A response larger than 4096 bytes can overflow the hal_buf buffer.
Risk Assessment
This can lead to memory corruption, system crash, or potential code execution by malicious firmware.
Recommendation
Apply the kernel patch that adds a bounds check on the response length.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix heap overflow from oversized firmware HAL response The firmware response dispatcher copies all synchronous HAL responses into the 4096-byte hal_buf without validating the response length. A response exceeding WCN36XX_HAL_BUF_SIZE causes a heap buffer overflow with firmware-controlled content. Add a bounds check on the response length.