CVE-2022-49190: kernel/resource: fix kfree() of bootmem memory again
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: kernel/resource: fix kfree() of bootmem memory again Since commit ebff7d8f270d ("mem hotunplug: fix kfree() of bootmem memory"), we could get a resource allocated during boot via alloc_resource(). And it's required to release the resource using free_resource(). Howerver, many people use kfree directly which will result in kernel BUG. In order to fix this without fixing every call site, just leak a couple of bytes in such corner case.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=3.10<5.15.33 | |
| Linux Kernel | >=5.16<5.16.19 | |
| Linux Kernel | >=5.17<5.17.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-49190?
CVE-2022-49190 has a severity rating that indicates it poses a potential risk to the stability of the Linux kernel.
How do I fix CVE-2022-49190?
To mitigate CVE-2022-49190, update to the latest patched version of the Linux kernel that addresses this vulnerability.
Which versions of the Linux Kernel are affected by CVE-2022-49190?
CVE-2022-49190 affects Linux Kernel versions from 3.10 up to 5.17.2 and specific versions in between.
What type of vulnerability is CVE-2022-49190?
CVE-2022-49190 is a memory management vulnerability within the Linux kernel related to resource deallocation.
Is CVE-2022-49190 a remote exploit?
CVE-2022-49190 does not specifically indicate it is a remote exploit, but it affects system stability.
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