CVE-2022-50521 PUBLISHED

platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()

Assigner: Linux
Reserved: 07.10.2025 Published: 07.10.2025 Updated: 07.10.2025

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 50ac517d6f5348b276f1f663799cf85dce521518 (excl.)
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 5b0f81b0808235967868e01336c976e840217108 (excl.)
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 14bb4bde3b7b2584734b13747b345caeeb41bea3 (excl.)
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 17cd8c46cbec4e6ad593fb9159928b8e7608c11a (excl.)
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 3cf81501356c9e898ad94b2369ffc805f83f7d7b (excl.)
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 379e7794c5e7485193d25d73614fbbd1e1387f6f (excl.)
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 87426ce3bd57ad414b6e2436434ef8128986a9a5 (excl.)
  • affected from 99b38b4acc0d7dbbab443273577cff60080fcfad to 727cc0147f5066e359aca65cc6cc5e6d64cc15d8 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 3.0 is affected
  • unaffected from 0 to 3.0 (excl.)
  • unaffected from 4.14.303 to 4.14.* (incl.)
  • unaffected from 4.19.270 to 4.19.* (incl.)
  • unaffected from 5.4.229 to 5.4.* (incl.)
  • unaffected from 5.10.163 to 5.10.* (incl.)
  • unaffected from 5.15.86 to 5.15.* (incl.)
  • unaffected from 6.0.16 to 6.0.* (incl.)
  • unaffected from 6.1.2 to 6.1.* (incl.)
  • unaffected from 6.2 to * (incl.)

References