CVE-2024-38390: drm/msm/a6xx: Avoid a nullptr dereference when speedbin setting fails
First published: Fri Jun 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/msm/a6xx: Avoid a nullptr dereference when speedbin setting fails Calling a6xx_destroy() before adreno_gpu_init() leads to a null pointer dereference on: msm_gpu_cleanup() : platform_set_drvdata(gpu->pdev, NULL); as gpu->pdev is only assigned in: a6xx_gpu_init() |_ adreno_gpu_init |_ msm_gpu_init() Instead of relying on handwavy null checks down the cleanup chain, explicitly de-allocate the LLC data and free a6xx_gpu instead. Patchwork: https://patchwork.freedesktop.org/patch/588919/
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=6.1<6.1.93 | |
| Linux Linux kernel | >=6.2<6.6.33 | |
| Linux Linux kernel | >=6.7<6.9.4 | |
| 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/247849eeb3fd88f8990ed73e33af70d5c10f9aec
- https://git.kernel.org/stable/c/46d4efcccc688cbacdd70a238bedca510acaa8e4
- https://git.kernel.org/stable/c/617e3d1680504a3f9d88e1582892c68be155498f
- https://git.kernel.org/stable/c/a1955a6df91355fef72a3a254700acd3cc1fec0d
- https://launchpad.net/bugs/cve/CVE-2024-38390
- https://git.kernel.org/linus/46d4efcccc688cbacdd70a238bedca510acaa8e4
- https://security-tracker.debian.org/tracker/CVE-2024-38390
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-38390
- https://nvd.nist.gov/vuln/detail/CVE-2024-38390
- https://ubuntu.com/security/CVE-2024-38390
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