CVE-2024-45015: drm/msm/dpu: move dpu_encoder's connector assignment to atomic_enable()
First published: Wed Sep 11 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/msm/dpu: move dpu_encoder's connector assignment to atomic_enable() For cases where the crtc's connectors_changed was set without enable/active getting toggled , there is an atomic_enable() call followed by an atomic_disable() but without an atomic_mode_set(). This results in a NULL ptr access for the dpu_encoder_get_drm_fmt() call in the atomic_enable() as the dpu_encoder's connector was cleared in the atomic_disable() but not re-assigned as there was no atomic_mode_set() call. Fix the NULL ptr access by moving the assignment for atomic_enable() and also use drm_atomic_get_new_connector_for_encoder() to get the connector from the atomic_state. Patchwork: https://patchwork.freedesktop.org/patch/606729/
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.19<6.6.48 | |
| Linux Linux kernel | >=6.7<6.10.7 | |
| Linux Linux kernel | =6.11-rc1 | |
| Linux Linux kernel | =6.11-rc2 | |
| Linux Linux kernel | =6.11-rc3 | |
| Linux Linux kernel | =6.11-rc4 | |
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.115-1<=6.1.119-1 | 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/3bacf814b6a61cc683c68465f175ebd938f09c52
- https://git.kernel.org/stable/c/3fb61718bcbe309279205d1cc275a6435611dc77
- https://git.kernel.org/stable/c/aedf02e46eb549dac8db4821a6b9f0c6bf6e3990
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-45015
- https://nvd.nist.gov/vuln/detail/CVE-2024-45015
- https://launchpad.net/bugs/cve/CVE-2024-45015
- https://security-tracker.debian.org/tracker/CVE-2024-45015
- https://ubuntu.com/security/CVE-2024-45015
- https://git.kernel.org/linus/aedf02e46eb549dac8db4821a6b9f0c6bf6e3990
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