CVE-2021-47500
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
iio: mma8452: Fix trigger reference couting
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | 094d513b78b1714113bc016684b8142382e071ba | Unavailable | None listed |
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | fb75cc4740d81264cd5bcb0e17d961d018a8be96 | Unavailable | None listed |
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | 794c0898f6bf39a458655d5fb4af70ec43a5cfcb | Unavailable | None listed |
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | f5deab10ced368c807866283f8b79144c4823be8 | Unavailable | None listed |
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | acf0088ac073ca6e7f4cad6acac112177e08df5e | Unavailable | None listed |
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | db12d95085367de8b0223929d1332731024441f1 | Unavailable | None listed |
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | c43517071dfc9fce34f8f69dbb98a86017f6b739 | Unavailable | None listed |
| ae6d9ce05691bf79694074db7c7da980080548af | affected | git | cd0082235783f814241a1c9483fb89e405f4f892 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.2 | Unavailable | None listed |
| 4.4.295 | unaffected | semver | Unavailable | 4.4.* | None listed |
| 4.9.293 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.258 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.221 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.165 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.85 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.8 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.16 | unaffected | original_commit_for_fix | Unavailable | * | None listed |