CVE-2021-47289 (GCVE-0-2021-47289)

Vulnerability from cvelistv5 – Published: 2024-05-21 14:35 – Updated: 2026-05-11 13:51
VLAI
Title
ACPI: fix NULL pointer dereference
Summary
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:39 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fe066621c7966fe47fa17c6be6fd81adb3c0509f , < 38f54217b423c0101d03a00feec6fb8ec608b12e (git)
Affected: fe066621c7966fe47fa17c6be6fd81adb3c0509f , < cae3fa3d8165761f3000f523b11cfa1cd35206bc (git)
Affected: fe066621c7966fe47fa17c6be6fd81adb3c0509f , < ccf23a0888077a25a0793a746c3941db2a7562e4 (git)
Affected: fe066621c7966fe47fa17c6be6fd81adb3c0509f , < fc68f42aa737dc15e7665a4101d4168aadb8e4c4 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.139 , ≤ 5.4.* (semver)
Unaffected: 5.10.57 , ≤ 5.10.* (semver)
Unaffected: 5.13.6 , ≤ 5.13.* (semver)
Unaffected: 5.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.