Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails In mce_threshold_create_device(), if threshold_create_bank() fails, the previously allocated threshold banks array @bp will be leaked because the call to mce_threshold_remove_device() will not free it. This happens because mce_threshold_remove_device() fetches the pointer through the threshold_banks per-CPU variable but bp is written there only after the bank creation is successful, and not before, when threshold_create_bank() fails. Add a helper which unwinds all the bank creation work previously done and pass into it the previously allocated threshold banks array for freeing. [ bp: Massage. ]
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.8, < 5.10.121 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37Patch
- https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616Patch
- https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6Patch
- https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1ePatch
- https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0Patch
FAQ
What is CVE-2022-49549?
CVE-2022-49549 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails In mce_threshold_create_device(), if threshold_create_bank() fails...
How severe is CVE-2022-49549?
CVE-2022-49549 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-49549?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.