CVE-2021-47063
drm: bridge/panel: Cleanup connector on bridge detach
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
drm: bridge/panel: Cleanup connector on bridge detach
If we don't call drm_connector_cleanup() manually in
panel_bridge_detach(), the connector will be cleaned up with the other
DRM objects in the call to drm_mode_config_cleanup(). However, since our
drm_connector is devm-allocated, by the time drm_mode_config_cleanup()
will be called, our connector will be long gone. Therefore, the
connector must be cleaned up when the bridge is detached to avoid
use-after-free conditions.
v2: Cleanup connector only if it was created
v3: Add FIXME
v4: (Use connector->dev) directly in if() block
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm: bridge/panel: Limpiar conector en bridge detach Si no llamamos a drm_connector_cleanup() manualmente en panel_bridge_detach(), el conector se limpiará con los demás objetos DRM en la llamada a drm_mode_config_cleanup(). Sin embargo, dado que nuestro drm_connector está asignado por devm, para cuando se llame a drm_mode_config_cleanup(), nuestro conector ya no existirá. Por lo tanto, el conector debe limpiarse cuando se retira el puente para evitar condiciones de uso después de su liberación. v2: Limpiar el conector solo si fue creado v3: Agregar FIXME v4: (Usar conector->dev) directamente en el bloque if()
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-29 CVE Reserved
- 2024-02-29 CVE Published
- 2024-12-17 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (5)
URL | Tag | Source |
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https://git.kernel.org/stable/c/13dfc0540a575b47b2d640b093ac16e9e09474f6 | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.13 < 5.10.37 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.13 < 5.10.37" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.13 < 5.11.21 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.13 < 5.11.21" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.13 < 5.12.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.13 < 5.12.4" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.13 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.13 < 5.13" | en |
Affected
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