CVE-2021-47500

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-47500
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47500.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-47500
Related
Published
2024-05-24T15:15:09Z
Modified
2024-09-18T03:18:49.647213Z
Summary
[none]
Details

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.

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.92-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.15.15-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.15.15-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}