CVE-2019-9500

Broadcom brcmfmac driver is vulnerable to a heap buffer overflow

Published Jan 16, 2020 CVSS 3.1 · 7.9 High EPSS 3.9% KEV · Not listed
Description
The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This vulnerability can be exploited with compromised chipsets to compromise the host, or when used in combination with CVE-2019-9503, can be used remotely. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.

Remediation

Vendor Solution

https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deff

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-1824-1 linux-4.9 security update
Debian DSA Debian DSA DSA-4465-1 linux security update
EUVD EUVD EUVD-2019-18874 The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This vulnerability can be exploited with compromised chipsets to compromise the host, or when used in combination with CVE-2019-9503, can be used remotely. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.
Ubuntu USN Ubuntu USN USN-3979-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3980-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3980-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3981-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3981-2 Linux kernel (HWE) vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
certcc
Published
Updated
Aug 4, 2024, 9:54 PM
Reserved
Mar 1, 2019, 12:00 AM
Status
Modified
Published
Jan 16, 2020, 9:15 PM
Modified
Jun 17, 2026, 2:43 AM
Severity
Important
Public date
Feb 19, 2019, 12:00 AM