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Vulnerability record · CVE-2023-28576 · published 8 August 2023

CVE-2023-28576: Qualcomm fastconnect 6800 firmware toctou race condition vulnerability

Qualcomm · Fastconnect 6800 Firmware

The buffer obtained from kernel APIs such as cam_mem_get_cpu_buf() may be readable/writable in userspace after kernel accesses it. In other words, user mode may race and modify the packet header (e.g. header.count), causing checks (e.g. size checks) in kernel code to be invalid. This may lead to out-of-bounds read/write issues.

7.0 CVSS 3.1 High EPSS 0.08% · top 99.7% CWE-367 · TOCTOU race condition
7.0CVSS 3.1 base score
0.08%EPSS exploitation probability, 30 days
NoNot in CISA KEV
31Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The buffer obtained from kernel APIs such as cam_mem_get_cpu_buf() may be readable/writable in userspace after kernel accesses it. In other words, user mode may race and modify the packet header (e.g. header.count), causing checks (e.g. size checks) in kernel code to be invalid. This may lead to out-of-bounds read/write issues.

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

31 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.qualcomm.com/company/product-security/bulletins/august-2023-bulletin PatchVendor Advisory
https://www.qualcomm.com/company/product-security/bulletins/august-2023-bulletin PatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-28576), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.