CVE-2022-50521

Summary

In the Linux kernel, the following vulnerability has been resolved:

platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mxds|mx

The ACPI buffer memory (out.pointer) returned by wmi_evaluate_method() is not freed after the call, so it leads to memory leak.

The method results in ACPI buffer is not used, so just pass NULL to wmi_evaluate_method() which fixes the memory leak.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 50ac517d6f5348b276f1f663799cf85dce521518affected
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 5b0f81b0808235967868e01336c976e840217108affected
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 14bb4bde3b7b2584734b13747b345caeeb41bea3affected
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 17cd8c46cbec4e6ad593fb9159928b8e7608c11aaffected
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 3cf81501356c9e898ad94b2369ffc805f83f7d7baffected
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 379e7794c5e7485193d25d73614fbbd1e1387f6faffected
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 87426ce3bd57ad414b6e2436434ef8128986a9a5affected
LinuxLinux99b38b4acc0d7dbbab443273577cff60080fcfad < 727cc0147f5066e359aca65cc6cc5e6d64cc15d8affected
LinuxLinux3.0affected
LinuxLinux0 < 3.0unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References