UBUNTU-CVE-2024-44967
In the Linux kernel, the following vulnerability has been resolved: drm/mgag200: Bind I2C lifetime to DRM device Managed cleanup with devm_add_action_or_reset() will release the I2C adapter when the underlying Linux device goes away. But the connector still refers to it, so this cleanup leaves behind a stale pointer in struct drm_connector.ddc. Bind the lifetime of the I2C adapter to the connector's lifetime by using DRM's managed release. When the DRM device goes away (after the Linux device) DRM will first clean up the connector and then clean up the I2C adapter.
02 / AFFECTED SOFTWARE
Affected packages
6 explicit affected versions
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35 explicit affected versions
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26 explicit affected versions
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13 explicit affected versions
13 explicit affected versions
7 explicit affected versions
10 explicit affected versions
12 explicit affected versions
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16 explicit affected versions
3 explicit affected versions
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26 explicit affected versions
37 explicit affected versions
17 explicit affected versions
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38 explicit affected versions
9 explicit affected versions
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8 explicit affected versions
7 explicit affected versions
4 explicit affected versions
13 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
12 explicit affected versions
14 explicit affected versions
4 explicit affected versions
11 explicit affected versions
1 explicit affected versions
10 explicit affected versions
11 explicit affected versions
50 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: drm/mgag200: Bind I2C lifetime to DRM device Managed cleanup with devm_add_action_or_reset() will release the I2C adapter when the underlying Linux device goes away. But the connector still refers to it, so this cleanup leaves behind a stale pointer in struct drm_connector.ddc. Bind the lifetime of the I2C adapter to the connector's lifetime by using DRM's managed release. When the DRM device goes away (after the Linux device) DRM will first clean up the connector and then clean up the I2C adapter.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/eb1ae34e48a09b7a1179c579aed042b032e408f4
- https://git.kernel.org/stable/c/55a6916db77102765b22855d3a0add4751988b7c
- https://git.kernel.org/stable/c/81d34df843620e902dd04aa9205c875833d61c17
- https://git.kernel.org/stable/c/9d96b91e03cba9dfcb4ac370c93af4dbc47d5191
- https://git.kernel.org/stable/c/eb1ae34e48a09b7a1179c579aed042b032e408f4
- https://ubuntu.com/security/CVE-2024-44967
- https://ubuntu.com/security/notices/USN-7154-1
- https://ubuntu.com/security/notices/USN-7154-2
- https://ubuntu.com/security/notices/USN-7155-1
- https://ubuntu.com/security/notices/USN-7156-1
- https://ubuntu.com/security/notices/USN-7196-1
- https://www.cve.org/CVERecord?id=CVE-2024-44967