CVE-2024-46709: drm/vmwgfx: Fix prime with external buffers
First published: Fri Sep 13 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix prime with external buffers Make sure that for external buffers mapping goes through the dma_buf interface instead of trying to access pages directly. External buffers might not provide direct access to readable/writable pages so to make sure the bo's created from external dma_bufs can be read dma_buf interface has to be used. Fixes crashes in IGT's kms_prime with vgem. Regular desktop usage won't trigger this due to the fact that virtual machines will not have multiple GPUs but it enables better test coverage in IGT.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.119-1 6.12.9-1 6.12.10-1 | |
| Linux Kernel | >=6.6.29<6.6.49 | |
| Linux Kernel | >=6.8.8<6.9 | |
| Linux Kernel | >=6.9<6.10.8 | |
| Linux Kernel | =6.11-rc1 | |
| Linux Kernel | =6.11-rc2 | |
| Linux Kernel | =6.11-rc3 | |
| Linux Kernel | =6.11-rc4 | |
| Linux Kernel | =6.11-rc5 |
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Reference Links
- https://git.kernel.org/stable/c/50f1199250912568606b3778dc56646c10cb7b04
- https://git.kernel.org/stable/c/5c12391ee1ab59cb2f3be3f1f5e6d0fc0c2dc854
- https://git.kernel.org/stable/c/9a9716bbbf3dd6b6cbefba3abcc89af8b72631f4
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46709
- https://nvd.nist.gov/vuln/detail/CVE-2024-46709
- https://launchpad.net/bugs/cve/CVE-2024-46709
- https://security-tracker.debian.org/tracker/CVE-2024-46709
- https://ubuntu.com/security/CVE-2024-46709
- https://git.kernel.org/linus/50f1199250912568606b3778dc56646c10cb7b04
Frequently Asked Questions
What is the severity of CVE-2024-46709?
CVE-2024-46709 has been classified with a severity rating of medium due to potential exploitation of external buffer mapping.
How do I fix CVE-2024-46709?
To fix CVE-2024-46709, update your Linux kernel to the patched versions 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.119-1, 6.12.9-1, or 6.12.10-1.
Which versions of the Linux kernel are affected by CVE-2024-46709?
CVE-2024-46709 affects various versions of the Linux kernel including versions between 6.11-rc1 to 6.11-rc5 and several others within specified version ranges.
What is the impact of CVE-2024-46709?
The impact of CVE-2024-46709 could potentially allow attackers to exploit vulnerabilities related to external buffer mappings.
Is there a workaround for CVE-2024-46709?
Currently, the recommended action is to apply the available security updates as there are no effective workarounds for CVE-2024-46709.
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