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CVE-2022-48899 (GCVE-0-2022-48899)

Vulnerability from cvelistv5 – Published: 2024-08-21 06:10 – Updated: 2026-08-05 08:52
VLAI
Title
drm/virtio: Fix GEM handle creation UAF
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Fix GEM handle creation UAF Userspace can guess the handle value and try to race GEM object creation with handle close, resulting in a use-after-free if we dereference the object after dropping the handle's reference. For that reason, dropping the handle's reference must be done *after* we are done dereferencing the object.
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 2024-09-10 16:03 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 19ec87d06acfab2313ee82b2a689bf0c154e57ea (git)
Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < d01d6d2b06c0d8390adf8f3ba08aa60b5642ef73 (git)
Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 68bcd063857075d2f9edfed6024387ac377923e2 (git)
Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 011ecdbcd520c90c344b872ca6b4821f7783b2f8 (git)
Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < adc48e5e408afbb01d261bd303fd9fbbbaa3e317 (git)
Affected: 62fb7a5e10962ac6ae2a2d2dbd3aedcb2a3e3257 , < 52531258318ed59a2dc5a43df2eaf0eb1d65438e (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.4
Unaffected: 0 , < 4.4 (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.164 , ≤ 5.10.* (semver)
Unaffected: 5.15.89 , ≤ 5.15.* (semver)
Unaffected: 6.1.7 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/virtio: corrige la creaci\u00f3n del identificador GEM. El espacio de usuario UAF puede adivinar el valor del identificador e intentar acelerar la creaci\u00f3n de objetos GEM con el cierre del identificador, lo que resulta en un use-after-free si desreferenciamos el objeto despu\u00e9s de soltar la referencia del identificador. Por esa raz\u00f3n, la eliminaci\u00f3n de la referencia del identificador debe realizarse *despu\u00e9s* de que hayamos terminado de desreferenciar el objeto."
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}



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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

Author Source Type Date Other

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.


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.