CVE-2025-37990: Debian Linux

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: wifi: brcm80211: fmac: Add error handling for brcmf_usb_dl_writeimage() The function brcmf_usb_dl_writeimage() calls the function brcmf_usb_dl_cmd() but dose not check its return value. The 'state.state' and the 'state.bytes' are uninitialized if the function brcmf_usb_dl_cmd() fails. It is dangerous to use uninitialized variables in the conditions. Add error handling for brcmf_usb_dl_cmd() to jump to error handling path if the brcmf_usb_dl_cmd() fails and the 'state.state' and the 'state.bytes' are uninitialized. Improve the error message to report more detailed error information.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 3.4, before 5.4.294 (fixed in 5.4.294); from 5.5, before 5.10.238 (fixed in 5.10.238); from 5.11, before 5.15.182 (fixed in 5.15.182); from 5.16, before 6.1.138 (fixed in 6.1.138); from 6.2, before 6.6.90 (fixed in 6.6.90); from 6.7, before 6.12.28 (fixed in 6.12.28); …

Published 2025-05-20. Last modified 2026-06-17.