CVE-2021-47063
drm: bridge/panel: Cleanup connector on bridge detach
Description
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
INFO
Published Date :
Feb. 29, 2024, 11:15 p.m.
Last Modified :
Dec. 10, 2024, 4:43 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the Linux kernel packages.
- Reboot the system to apply the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47063.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47063 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47063
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47063 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47063 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Dec. 10, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.13 up to (excluding) 5.10.37 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.11.21 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.4 Changed Reference Type https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1 No Types Assigned https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1 Patch Changed Reference Type https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1 No Types Assigned https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1 Patch Changed Reference Type https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0 No Types Assigned https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0 Patch Changed Reference Type https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0 No Types Assigned https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0 Patch Changed Reference Type https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327 No Types Assigned https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327 Patch Changed Reference Type https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327 No Types Assigned https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327 Patch Changed Reference Type https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2 No Types Assigned https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2 Patch Changed Reference Type https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2 No Types Assigned https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1 Added Reference https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0 Added Reference https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327 Added Reference https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 29, 2024
Action Type Old Value New Value Added Description 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 Added Reference Linux https://git.kernel.org/stable/c/ce450934a00cf896e648fde08d0bd1426653d7a2 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/18149b420c9bd93c443e8d1f48a063d71d9f6aa1 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/98d7d76a74e48ec3ddf2e23950adff7edcab9327 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/4d906839d321c2efbf3fed4bc31ffd9ff55b75c0 [No types assigned]