SB2025100512 - NULL pointer dereference in Linux kernel brcm80211 brcmfmac driver
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100512
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2023-53565)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the brcmf_usb_disconnect_cb() and brcmf_usb_probe() functions in drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.