CVE-2021-47063

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

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1	Patch
https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0	Patch
https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327	Patch
https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2	Patch
https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1	Patch
https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0	Patch
https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327	Patch
https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-02-29 23:15

Updated : 2024-12-10 16:43

NVD link : CVE-2021-47063

Mitre link : CVE-2021-47063

CVE.ORG link : CVE-2021-47063

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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