CVE-2021-47500
- 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
-
- https://git.kernel.org/stable/c/094d513b78b1714113bc016684b8142382e071ba
- https://git.kernel.org/stable/c/794c0898f6bf39a458655d5fb4af70ec43a5cfcb
- https://git.kernel.org/stable/c/acf0088ac073ca6e7f4cad6acac112177e08df5e
- https://git.kernel.org/stable/c/c43517071dfc9fce34f8f69dbb98a86017f6b739
- https://git.kernel.org/stable/c/cd0082235783f814241a1c9483fb89e405f4f892
- https://git.kernel.org/stable/c/db12d95085367de8b0223929d1332731024441f1
- https://git.kernel.org/stable/c/f5deab10ced368c807866283f8b79144c4823be8
- https://git.kernel.org/stable/c/fb75cc4740d81264cd5bcb0e17d961d018a8be96
- https://security-tracker.debian.org/tracker/CVE-2021-47500
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source