CVE-2024-49865: drm/xe/vm: move xa_alloc to prevent UAF
First published: Mon Oct 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: drm/xe/vm: move xa_alloc to prevent UAF Evil user can guess the next id of the vm before the ioctl completes and then call vm destroy ioctl to trigger UAF since create ioctl is still referencing the same vm. Move the xa_alloc all the way to the end to prevent this. v2: - Rebase (cherry picked from commit dcfd3971327f3ee92765154baebbaece833d3ca9)
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.8<6.11.3 | |
| Linux Kernel | =6.12-rc1 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://git.kernel.org/stable/c/09cf8901fc0225898311b375cfcc67bae37ed5da
- https://git.kernel.org/stable/c/74231870cf4976f69e83aa24f48edb16619f652f
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-49865
- https://nvd.nist.gov/vuln/detail/CVE-2024-49865
- https://launchpad.net/bugs/cve/CVE-2024-49865
- https://security-tracker.debian.org/tracker/CVE-2024-49865
- https://ubuntu.com/security/CVE-2024-49865
- https://git.kernel.org/linus/74231870cf4976f69e83aa24f48edb16619f652f
Frequently Asked Questions
What is the severity of CVE-2024-49865?
CVE-2024-49865 has been rated as high severity due to the potential for a use-after-free vulnerability in the Linux kernel.
How do I fix CVE-2024-49865?
To fix CVE-2024-49865, you should update your Linux kernel to version 6.11.4 or later, or to 6.12-rc2 or later.
What versions of the Linux kernel are affected by CVE-2024-49865?
CVE-2024-49865 affects Linux kernel versions between 6.8 and 6.11.3 and version 6.12-rc1.
What is the nature of the vulnerability described in CVE-2024-49865?
CVE-2024-49865 is a use-after-free vulnerability enabling unauthorized user actions that could lead to system instability.
Can CVE-2024-49865 be exploited remotely?
Exploitation of CVE-2024-49865 requires local access to the system, making it a local privilege escalation issue.
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