CVE-2021-47500 (GCVE-0-2021-47500)

Vulnerability from cvelistv5 – Published: 2024-05-24 15:01 – Updated: 2025-05-04 07:12
VLAI?
Title
iio: mma8452: Fix trigger reference couting
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ae6d9ce05691bf79694074db7c7da980080548af , < 094d513b78b1714113bc016684b8142382e071ba (git)
Affected: ae6d9ce05691bf79694074db7c7da980080548af , < fb75cc4740d81264cd5bcb0e17d961d018a8be96 (git)
Affected: ae6d9ce05691bf79694074db7c7da980080548af , < 794c0898f6bf39a458655d5fb4af70ec43a5cfcb (git)
Affected: ae6d9ce05691bf79694074db7c7da980080548af , < f5deab10ced368c807866283f8b79144c4823be8 (git)
Affected: ae6d9ce05691bf79694074db7c7da980080548af , < acf0088ac073ca6e7f4cad6acac112177e08df5e (git)
Affected: ae6d9ce05691bf79694074db7c7da980080548af , < db12d95085367de8b0223929d1332731024441f1 (git)
Affected: ae6d9ce05691bf79694074db7c7da980080548af , < c43517071dfc9fce34f8f69dbb98a86017f6b739 (git)
Affected: ae6d9ce05691bf79694074db7c7da980080548af , < cd0082235783f814241a1c9483fb89e405f4f892 (git)
Create a notification for this product.
    Linux Linux Affected: 4.2
Unaffected: 0 , < 4.2 (semver)
Unaffected: 4.4.295 , ≤ 4.4.* (semver)
Unaffected: 4.9.293 , ≤ 4.9.* (semver)
Unaffected: 4.14.258 , ≤ 4.14.* (semver)
Unaffected: 4.19.221 , ≤ 4.19.* (semver)
Unaffected: 5.4.165 , ≤ 5.4.* (semver)
Unaffected: 5.10.85 , ≤ 5.10.* (semver)
Unaffected: 5.15.8 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.