CVE-2022-49549
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49549
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49549.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49549
- Downstream
- Related
- Published
- 2025-02-26T07:01:30Z
- Modified
- 2025-08-09T20:01:26Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
x86/MCE/AMD: Fix memory leak when thresholdcreatebank() fails
In mcethresholdcreatedevice(), if thresholdcreatebank() fails, the previously allocated threshold banks array @bp will be leaked because the call to mcethresholdremovedevice() will not free it.
This happens because mcethresholdremovedevice() fetches the pointer through the thresholdbanks per-CPU variable but bp is written there only after the bank creation is successful, and not before, when thresholdcreatebank() 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. ]
- References
-
- https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37
- https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616
- https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6
- https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1e
- https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0