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TI-2019-06936 Aliases CVE-2019-9500GHSA-6jhq-h73f-x439

Broadcom brcmfmac driver is vulnerable to a heap buffer overflow

Priority MEDIUM 43CWE-122Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 21 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, Red Hat and Microsoft. Impact type from CWE-122 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.03853 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 8 advisoriesMicrosoft: 1 updateRed Hat: 21 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Broadcombrcmfmac WiFi drivercommit prior to 1b5e2423164b3670e8bc9174e4762d297990deff—No fix listedCNA
  • brcmfmac WiFi driver VendorBroadcom Affected commit prior to 1b5e2423164b3670e8bc9174e4762d297990deff Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:broadcom:brcmfmac_driver:-:*:*:*:*:*:*:*not specified by NVDVulnerableBroadcom
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.5 to before 4.9.181; 4.10 to before 4.14.123; 4.15 to before 4.19.47; 4.20 to before 5.0.20VulnerableLinux
  • cpe:2.3:a:broadcom:brcmfmac_driver:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Broadcom
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.5 to before 4.9.181; 4.10 to before 4.14.123; 4.15 to before 4.19.47; 4.20 to before 5.0.20 Vulnerable ·Linux

Remediation

Red Hat 8 advisories

  • RHSA-2019:4168 Released 2019-12-10 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) bpftool-3.10.0-957.41.1.el7, kernel-3.10.0-957.41.1.el7, kernel-abi-whitelists-3.10.0-957.41.1.el7 +9
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) kernel-tools-libs-devel-3.10.0-957.41.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.6) bpftool-3.10.0-957.41.1.el7, kernel-3.10.0-957.41.1.el7, kernel-abi-whitelists-3.10.0-957.41.1.el7 +12
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) kernel-debug-devel-3.10.0-957.41.1.el7, kernel-tools-libs-devel-3.10.0-957.41.1.el7
    • Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS kernel-devel-3.10.0-957.41.1.el7, kernel-headers-3.10.0-957.41.1.el7, perf-3.10.0-957.41.1.el7 +1
  • RHSA-2019:4171 Released 2019-12-10 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux Server EUS (v. 7.6) kpatch-patch-3_10_0-957_35_1-1-3.el7, kpatch-patch-3_10_0-957_35_2-1-2.el7, kpatch-patch-3_10_0-957_38_1-1-1.el7 +2
  • RHSA-2019:3217 Released 2019-10-29 · Red Hat rating Important
    kernel-alt security and bug fix update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.14.1.el7a, kernel-abi-whitelists-4.14.0-115.14.1.el7a, kernel-alt-4.14.0-115.14.1.el7a +8
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.14.1.el7a, kernel-tools-libs-devel-4.14.0-115.14.1.el7a
Show 5 more Red Hat advisories
  • RHSA-2019:2945 Released 2019-10-01 · Red Hat rating Important
    kpatch-patch security update
    • Red Hat Enterprise Linux Server (v. 7) kpatch-patch-3_10_0-1062-1-2.el7
  • RHSA-2019:2741 Released 2019-09-12 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-core-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-4.18.0-80.11.1.rt9.156.el8_0 +7
    • Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-core-4.18.0-80.11.1.rt9.156.el8_0, kernel-rt-debug-4.18.0-80.11.1.rt9.156.el8_0 +9
  • RHSA-2019:2703 Released 2019-09-12 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-80.11.1.el8_0
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-80.11.1.el8_0, kernel-4.18.0-80.11.1.el8_0, kernel-abi-whitelists-4.18.0-80.11.1.el8_0 +21
  • RHSA-2019:2609 Released 2019-09-04 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-1062.1.1.rt56.1024.el7, kernel-rt-debug-3.10.0-1062.1.1.rt56.1024.el7, kernel-rt-debug-devel-3.10.0-1062.1.1.rt56.1024.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1062.1.1.rt56.1024.el7, kernel-rt-debug-3.10.0-1062.1.1.rt56.1024.el7, kernel-rt-debug-devel-3.10.0-1062.1.1.rt56.1024.el7 +7
  • RHSA-2019:2600 Released 2019-09-04 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1062.1.1.el7, kernel-3.10.0-1062.1.1.el7, kernel-abi-whitelists-3.10.0-1062.1.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1062.1.1.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bpftool-3.10.0-1062.1.1.el7, kernel-3.10.0-1062.1.1.el7, kernel-abi-whitelists-3.10.0-1062.1.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1062.1.1.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1062.1.1.el7, kernel-3.10.0-1062.1.1.el7, kernel-abi-whitelists-3.10.0-1062.1.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1062.1.1.el7, kernel-tools-libs-devel-3.10.0-1062.1.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1062.1.1.el7, kernel-3.10.0-1062.1.1.el7, kernel-abi-whitelists-3.10.0-1062.1.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1062.1.1.el7

Microsoft 1 update

  • ADV190017 Released 2019-06-11
    Microsoft HoloLens Remote Code Execution Vulnerabilities

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise MRG 2AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2019:2703
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2019:2703
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:2600
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:2600
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:2600
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2019:4168
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:2600
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2019:4168
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2019:2741
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2019:2741
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2019:2609
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:2600, RHSA-2019:2945
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2019:4168, RHSA-2019:4171
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:2600
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2019:4168
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:2600
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:2600
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2019:3217
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2019:3217
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2019:2609
Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUSFixed RHSA-2019:4168
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-9500
  2. 2026-10-03 Alias added: GHSA-6jhq-h73f-x439
  3. 2026-10-16 EPSS moved to the 90th–95th percentile

References

Exploit 1

Patch 1

Advisory 1

  • TI-2019-06939 Broadcom brcmfmac driver is vulnerable to a frame validation bypass CVSS 3.1HIGH 8.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences