CVE-2019-9500
Broadcom brcmfmac driver is vulnerable to a heap buffer overflow
- Published
- Updated
- Reserved
- Assigned by
- certcc
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| certccCNA (assigner) | 3.1 | High7.9 | CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.3 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.8% of all CVEs (6 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.9.
Weakness
Affected products
Broadcom · brcmfmac WiFi driver
- affected commit prior to 1b5e2423164b3670e8bc9174e4762d297990deff
What to do
Solution: https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deff
References (3)
- https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html (opens in a new tab)x_refsource_MISCx_transferred
- https://kb.cert.org/vuls/id/166939/ (opens in a new tab)x_refsource_MISCx_transferred
- https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deff (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-9500)Record last updated .