CVE-2022-49385: driver: base: fix UAF when driver_attach failed
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: driver: base: fix UAF when driver_attach failed When driver_attach(drv); failed, the driver_private will be freed. But it has been added to the bus, which caused a UAF. To fix it, we need to delete it from the bus when failed.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=3.9<5.4.198 | |
| Linux Kernel | >=5.5<5.10.122 | |
| Linux Kernel | >=5.11<5.15.47 | |
| Linux Kernel | >=5.16<5.17.15 | |
| Linux Kernel | >=5.18<5.18.4 |
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Reference Links
- https://git.kernel.org/stable/c/5d709f58c743166fe1c6914b9de0ae8868600d9b
- https://git.kernel.org/stable/c/823f24f2e329babd0330200d0b74882516fe57f4
- https://git.kernel.org/stable/c/cdf1a683a01583bca4b618dd16223cbd6e462e21
- https://git.kernel.org/stable/c/5389101257828d1913d713d9a40acbe14f5961df
- https://git.kernel.org/stable/c/c059665c84feab46b7173d3a1bf36c2fb7f9df86
- https://git.kernel.org/stable/c/310862e574001a97ad02272bac0fd13f75f42a27
Frequently Asked Questions
What is the severity of CVE-2022-49385?
CVE-2022-49385 has been rated as moderate in severity due to the potential for a use-after-free condition that can lead to memory corruption.
How do I fix CVE-2022-49385?
To fix CVE-2022-49385, update the Linux kernel to the latest version that addresses this vulnerability.
What systems are affected by CVE-2022-49385?
CVE-2022-49385 affects various versions of the Linux kernel from 3.9 up to 5.18.4, including certain versions between those ranges.
What causes the vulnerability in CVE-2022-49385?
CVE-2022-49385 is caused by a use-after-free error occurring when a driver fails to attach properly, leading to potential memory safety issues.
Are there any workarounds for CVE-2022-49385?
There are no known workarounds for CVE-2022-49385; updating to a patched version of the Linux kernel is the recommended approach.
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