CVE-2023-53515 (GCVE-0-2023-53515)
Vulnerability from cvelistv5
Published
2025-10-01 11:46
Modified
2025-10-01 11:46
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
virtio-mmio: don't break lifecycle of vm_dev
vm_dev has a separate lifecycle because it has a 'struct device'
embedded. Thus, having a release callback for it is correct.
Allocating the vm_dev struct with devres totally breaks this protection,
though. Instead of waiting for the vm_dev release callback, the memory
is freed when the platform_device is removed. Resulting in a
use-after-free when finally the callback is to be called.
To easily see the problem, compile the kernel with
CONFIG_DEBUG_KOBJECT_RELEASE and unbind with sysfs.
The fix is easy, don't use devres in this case.
Found during my research about object lifetime problems.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 7eb781b1bbb7136fe78fb8c28c1c223c61fa32b5 Version: 7eb781b1bbb7136fe78fb8c28c1c223c61fa32b5 Version: 7eb781b1bbb7136fe78fb8c28c1c223c61fa32b5 Version: 7eb781b1bbb7136fe78fb8c28c1c223c61fa32b5 Version: 7eb781b1bbb7136fe78fb8c28c1c223c61fa32b5 Version: 7eb781b1bbb7136fe78fb8c28c1c223c61fa32b5 Version: 7eb781b1bbb7136fe78fb8c28c1c223c61fa32b5 |
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|
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