CVE-2021-47289
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)
ACPI: fix NULL pointer dereference
In the Linux kernel, the following vulnerability has been resolved: ACPI: fix NULL pointer dereference Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer.
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) |
|---|---|---|---|---|---|
| fe066621c7966fe47fa17c6be6fd81adb3c0509f | affected | git | 38f54217b423c0101d03a00feec6fb8ec608b12e | Unavailable | None listed |
| fe066621c7966fe47fa17c6be6fd81adb3c0509f | affected | git | cae3fa3d8165761f3000f523b11cfa1cd35206bc | Unavailable | None listed |
| fe066621c7966fe47fa17c6be6fd81adb3c0509f | affected | git | ccf23a0888077a25a0793a746c3941db2a7562e4 | Unavailable | None listed |
| fe066621c7966fe47fa17c6be6fd81adb3c0509f | affected | git | fc68f42aa737dc15e7665a4101d4168aadb8e4c4 | 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) |
|---|---|---|---|---|---|
| 5.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.2 | Unavailable | None listed |
| 5.4.139 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.57 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.13.6 | unaffected | semver | Unavailable | 5.13.* | None listed |
| 5.14 | unaffected | original_commit_for_fix | Unavailable | * | None listed |