CVE-2022-49657: usbnet: fix memory leak in error case
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: usbnet: fix memory leak in error case usbnet_write_cmd_async() mixed up which buffers need to be freed in which error case. v2: add Fixes tag v3: fix uninitialized buf pointer
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=3.8<4.9.323 | |
| Linux Kernel | >=4.10<4.14.288 | |
| Linux Kernel | >=4.15<4.19.252 | |
| Linux Kernel | >=4.20<5.4.205 | |
| Linux Kernel | >=5.5<5.10.130 | |
| Linux Kernel | >=5.11<5.15.54 | |
| Linux Kernel | >=5.16<5.18.11 | |
| Linux Kernel | =5.19-rc1 | |
| Linux Kernel | =5.19-rc2 | |
| Linux Kernel | =5.19-rc3 | |
| Linux Kernel | =5.19-rc4 | |
| Linux Kernel | =5.19-rc5 |
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Reference Links
- https://git.kernel.org/stable/c/3eed421ca5c809da93456f69203d164d5220be3d
- https://git.kernel.org/stable/c/5269209f54dd8dfd15f9383f3a3a1fe8370764f8
- https://git.kernel.org/stable/c/d5165e657987ff4ba0ace896d4376a3718a9fbc3
- https://git.kernel.org/stable/c/04894ab34faf40ab72a8a5ab5b404bb0606bbbff
- https://git.kernel.org/stable/c/0085da9df3dced730027923a6b48f58e9016af91
- https://git.kernel.org/stable/c/db89582ff330556188da856e01382ccbf3a5e706
- https://git.kernel.org/stable/c/e7b4f69946a38209b4a4f660bf0e4cbed94f9b4b
- https://git.kernel.org/stable/c/b55a21b764c1e182014630fa5486d717484ac58f
Frequently Asked Questions
What is the severity of CVE-2022-49657?
CVE-2022-49657 is considered a medium severity vulnerability due to the potential for a memory leak in error handling.
How do I fix CVE-2022-49657?
To fix CVE-2022-49657, you need to apply the patch provided in the Linux kernel updates that address the memory management issues.
What systems are affected by CVE-2022-49657?
CVE-2022-49657 affects various versions of the Linux kernel that utilize the usbnet driver.
What type of vulnerability is CVE-2022-49657?
CVE-2022-49657 is a memory leak vulnerability that occurs in the usbnet driver of the Linux kernel.
Is CVE-2022-49657 exploitable?
While CVE-2022-49657 could lead to resource exhaustion, it is not directly exploitable for remote code execution.
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