CVE-2025-21685
- Source
- https://cve.org/CVERecord?id=CVE-2025-21685
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21685.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21685
- Downstream
- Published
- 2025-02-09T11:37:25Z
- Modified
- 2026-08-12T03:30:49Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- platform/x86: lenovo-yoga-tab2-pro-1380-fastcharger: fix serdev race
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: lenovo-yoga-tab2-pro-1380-fastcharger: fix serdev race
The yt2_1380_fc_serdev_probe() function calls devm_serdev_device_open() before setting the client ops via serdev_device_set_client_ops(). This ordering can trigger a NULL pointer dereference in the serdev controller's receive_buf handler, as it assumes serdev->ops is valid when SERPORT_ACTIVE is set.
This is similar to the issue fixed in commit 5e700b384ec1 ("platform/chrome: cros_ec_uart: properly fix race condition") where devm_serdev_device_open() was called before fully initializing the device.
Fix the race by ensuring client ops are set before enabling the port via devm_serdev_device_open().
Note, serdev_device_set_baudrate() and serdev_device_set_flow_control() calls should be after the devm_serdev_device_open() call.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21685.json" }- References
-
- https://git.kernel.org/stable/c/3f67e07873df3c6d9ce2582260b83732e1d3a40b
- https://git.kernel.org/stable/c/59616a91e5e74833b2008b56c66879857c616006
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21685.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21685
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git