CVE-2026-74303
Bluetooth: hci_qca: fix NULL pointer dereference in qca_dmp_hdr() for non-serdev device
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: fix NULL pointer dereference in qca_dmp_hdr() for non-serdev device hu->serdev is NULL for hci_uart attached via non-serdev paths, but qca_dmp_hdr() unconditionally dereferences hu->serdev->dev.driver->name, causing a NULL pointer dereference. Fix by guarding the dereference with a NULL check and falling back to "hci_ldisc_qca" for the non-serdev case.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 15, 2026, 6:22 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74303
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply the patch to fix the NULL pointer dereference.
- Ensure hu->serdev is checked for NULL before dereferencing.
- Fallback to 'hci_ldisc_qca' for non-serdev devices.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74303.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74303 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74303
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74303 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74303 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '06d3fdfcdf5cefb06f2024b9d3dad356779399cf', 'lessThan': '809230cc25dde1d6bb00de2a1eeb5f3199402fbe', 'versionType': 'git'}, {'status': 'affected', 'version': '06d3fdfcdf5cefb06f2024b9d3dad356779399cf', 'lessThan': 'a209744230f9ce3d7a7e9a0839944f5cb5fa02a4', 'versionType': 'git'}, {'status': 'affected', 'version': '06d3fdfcdf5cefb06f2024b9d3dad356779399cf', 'lessThan': 'e284bb94ad4512ec0bcd9b91bda99e67c507f7f8', 'versionType': 'git'}, {'status': 'affected', 'version': '06d3fdfcdf5cefb06f2024b9d3dad356779399cf', 'lessThan': 'd54a5fb7d821b88c7c5569d450af59dafccaf414', 'versionType': 'git'}, {'status': 'affected', 'version': '06d3fdfcdf5cefb06f2024b9d3dad356779399cf', 'lessThan': '6b8cbcf08de0db62254d1981f83db0f94681ccd9', 'versionType': 'git'}], 'programFiles': ['drivers/bluetooth/hci_qca.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.6', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/bluetooth/hci_qca.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: fix NULL pointer dereference in qca_dmp_hdr() for non-serdev device hu->serdev is NULL for hci_uart attached via non-serdev paths, but qca_dmp_hdr() unconditionally dereferences hu->serdev->dev.driver->name, causing a NULL pointer dereference. Fix by guarding the dereference with a NULL check and falling back to "hci_ldisc_qca" for the non-serdev case. Added Reference https://git.kernel.org/stable/c/6b8cbcf08de0db62254d1981f83db0f94681ccd9 Added Reference https://git.kernel.org/stable/c/809230cc25dde1d6bb00de2a1eeb5f3199402fbe Added Reference https://git.kernel.org/stable/c/a209744230f9ce3d7a7e9a0839944f5cb5fa02a4 Added Reference https://git.kernel.org/stable/c/d54a5fb7d821b88c7c5569d450af59dafccaf414 Added Reference https://git.kernel.org/stable/c/e284bb94ad4512ec0bcd9b91bda99e67c507f7f8