CVE-2018-5843 — In the function wma_pdev_div_info_evt_handler() in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel, there is no upper bound check on the value event->num_chains_valid received from firmware which can lead to a buffer overwrite of the fixed size chain_rssi_result structure

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HIGH

In the function wma_pdev_div_info_evt_handler() in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel, there is no upper bound check on the value event->num_chains_valid received from firmware which can lead to a buffer overwrite of the fixed size chain_rssi_result structure

Published Jun 12, 2018

7.8

HIGH

CVSS 3.0

EPSS 0.17%

Description

In the function wma_pdev_div_info_evt_handler() in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel, there is no upper bound check on the value event->num_chains_valid received from firmware which can lead to a buffer overwrite of the fixed size chain_rssi_result structure.

Affected products

Vendor Qualcomm, Inc. Product Android for MSM, Firefox OS for MSM, QRD Android Default
n/a
- Version
  All Android releases from CAF using the Linux kernel
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Qualcomm, Inc.

Android for MSM, Firefox OS for MSM, QRD Android

n/a

Version	Status	Constraints
All Android releases from CAF using the Linux kernel	affected	-

Remediation

No remediation recorded yet.

Metrics

0.17% 0.00168

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00168

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.17% (0.00168)	5.55th	v5 (v2026.06.15)
Sep 20, 2026	0.17% (0.00168)	6.60th	v5 (v2026.06.15)
Jul 20, 2024	0.04% (0.00044)	12.95th	v3 (v2023.03.01)
May 25, 2024	0.04% (0.00044)	12.27th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00044)	10.26th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.17% (0.00171)	1.23th	v5 (v2026.06.15)
Apr 14, 2021	0.17% (0.00171)	0.00th	v1

Weaknesses (1)

CWE-119

Buffer Overflow

References (2)

https://source.android.com/security/bulletin/pixel/2018-05-01
Third Party Advisory
https://www.codeaurora.org/security-bulletin/2018/05/11/may-2018-code-aurora-security-bulletin-2
x_refsource_MISCPatchThird Party Advisory

Link	Providers	Tags
https://source.android.com/security/bulletin/pixel/2018-05-01		Third Party Advisory
https://www.codeaurora.org/security-bulletin/2018/05/11/may-2018-code-aurora-security-bulletin-2		x_refsource_MISCPatchThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner qualcomm

Published Jun 12, 2018

Updated Sep 17, 2024

Reserved Jan 19, 2018

Link CVE-2018-5843

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-5843

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-5843