CVE-2024-53056: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy()
First published: Tue Nov 19 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy() In mtk_crtc_create(), if the call to mbox_request_channel() fails then we set the "mtk_crtc->cmdq_client.chan" pointer to NULL. In that situation, we do not call cmdq_pkt_create(). During the cleanup, we need to check if the "mtk_crtc->cmdq_client.chan" is NULL first before calling cmdq_pkt_destroy(). Calling cmdq_pkt_destroy() is unnecessary if we didn't call cmdq_pkt_create() and it will result in a NULL pointer dereference.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=5.17<6.11.7 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| Linux Kernel | =6.12-rc5 | |
| debian/linux | <=6.1.123-1<=6.1.128-1 | 5.10.223-1 5.10.226-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/c60583a87cb4a85b69d1f448f0be5eb6ec62cbb2
- https://git.kernel.org/stable/c/4018651ba5c409034149f297d3dd3328b91561fd
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53056
- https://nvd.nist.gov/vuln/detail/CVE-2024-53056
- https://launchpad.net/bugs/cve/CVE-2024-53056
- https://security-tracker.debian.org/tracker/CVE-2024-53056
- https://ubuntu.com/security/CVE-2024-53056
- https://git.kernel.org/linus/4018651ba5c409034149f297d3dd3328b91561fd
Frequently Asked Questions
What is the severity of CVE-2024-53056?
CVE-2024-53056 is classified as a moderate severity vulnerability in the Linux kernel.
How do I fix CVE-2024-53056?
To fix CVE-2024-53056, update the Linux kernel to version 6.11.7 or later.
What versions of the Linux kernel are affected by CVE-2024-53056?
CVE-2024-53056 affects Linux kernel versions between 5.17 and 6.12-rc5.
Can CVE-2024-53056 lead to system instability?
Yes, CVE-2024-53056 can potentially cause system instability due to a NULL dereference.
Is CVE-2024-53056 limited to specific Linux distributions?
CVE-2024-53056 impacts any Linux distribution using the affected versions of the Linux kernel.
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