CVE-2021-47500 Details
Description
In the Linux kernel, the following vulnerability has been resolved: iio: mma8452: Fix trigger reference couting The mma8452 driver directly assigns a trigger to the struct iio_dev. The IIO core when done using this trigger will call `iio_trigger_put()` to drop the reference count by 1. Without the matching `iio_trigger_get()` in the driver the reference count can reach 0 too early, the trigger gets freed while still in use and a use-after-free occurs. Fix this by getting a reference to the trigger before assigning it to the IIO device.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 10, 2024References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.2, < 4.4.295 >= 4.5, < 4.9.293 >= 4.10, < 4.14.258 >= 4.15, < 4.19.221 >= 4.20, < 5.4.165 >= 5.5, < 5.10.85 >= 5.11, < 5.15.8 5.15 rc1 5.15 rc2 5.15 rc3 5.15 rc4 |
CPE
Remediation
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Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 4, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 6, 2025 | Initial Analysis | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 28, 2024 | CVE Modified | kernel.org |
| May 24, 2024 | New CVE Received | kernel.org |