CVE-2021-47087 (GCVE-0-2021-47087)

Vulnerability from cvelistv5 – Published: 2024-03-04 18:10 – Updated: 2026-08-05 08:45
VLAI
Title
tee: optee: Fix incorrect page free bug
Summary
In the Linux kernel, the following vulnerability has been resolved: tee: optee: Fix incorrect page free bug Pointer to the allocated pages (struct page *page) has already progressed towards the end of allocation. It is incorrect to perform __free_pages(page, order) using this pointer as we would free any arbitrary pages. Fix this by stop modifying the page pointer.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-06 20:26 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3c712f14d8a9354a8807c15c64c8dd334499cc42 , < 806142c805cacd098e61bdc0f72c778a2389fe4a (git)
Affected: 1340dc3fb75ea69221f4f5dcb0cbace55ad0331c , < ad338d825e3f7b96ee542bf313728af2d19fe9ad (git)
Affected: ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 , < 91e94e42f6fc49635f1a16d8ae3f79552bcfda29 (git)
Affected: ec185dd3ab257dc2a60953fdf1b6622f524cc5b7 , < 18549bf4b21c739a9def39f27dcac53e27286ab5 (git)
Affected: 255e17923b22cb7abd026e044416d61f6bd0eec0 (git)
Affected: 5.4.140 , < 5.4.169 (semver)
Affected: 5.10.58 , < 5.10.89 (semver)
Affected: 5.13.10 , < 5.14 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.4.169 , ≤ 5.4.* (semver)
Unaffected: 5.10.89 , ≤ 5.10.* (semver)
Unaffected: 5.15.12 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (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.
  • 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.



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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.