CVE-2024-26801

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-26801
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26801.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-26801
Downstream
Related
Published
2024-04-04T09:15:09Z
Modified
2025-08-09T19:01:28Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: Avoid potential use-after-free in hcierrorreset

While handling the HCIEVHARDWAREERROR event, if the underlying BT controller is not responding, the GPIO reset mechanism would free the hcidev and lead to a use-after-free in hcierrorreset.

Here's the call trace observed on a ChromeOS device with Intel AX201: queueworkon+0x3e/0x6c _hcicmdsyncsk+0x2ee/0x4c0 [bluetooth <HASH:3b4a6>] ? initwaitentry+0x31/0x31 _hcicmdsync+0x16/0x20 [bluetooth <HASH:3b4a 6>] hcierrorreset+0x4f/0xa4 [bluetooth <HASH:3b4a 6>] processonework+0x1d8/0x33f workerthread+0x21b/0x373 kthread+0x13a/0x152 ? prcontwork+0x54/0x54 ? kthreadblkcg+0x31/0x31 retfrom_fork+0x1f/0x30

This patch holds the reference count on the hcidev while processing a HCIEVHARDWAREERROR event to avoid potential crash.

References

Affected packages