{"id":"CVE-2022-50521","state":"PUBLISHED","title":"platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()\n\nThe ACPI buffer memory (out.pointer) returned by wmi_evaluate_method()\nis not freed after the call, so it leads to memory leak.\n\nThe method results in ACPI buffer is not used, so just pass NULL to\nwmi_evaluate_method() which fixes the memory leak.","publishedAt":"2025-10-07T15:19:15.213Z","updatedAt":"2026-05-11T19:21:02.240Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"50ac517d6f5348b276f1f663799cf85dce521518","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"5b0f81b0808235967868e01336c976e840217108","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"14bb4bde3b7b2584734b13747b345caeeb41bea3","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"17cd8c46cbec4e6ad593fb9159928b8e7608c11a","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"3cf81501356c9e898ad94b2369ffc805f83f7d7b","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"379e7794c5e7485193d25d73614fbbd1e1387f6f","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"87426ce3bd57ad414b6e2436434ef8128986a9a5","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"727cc0147f5066e359aca65cc6cc5e6d64cc15d8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/mxm-wmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.0","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/mxm-wmi.c"]}],"references":["https://git.kernel.org/stable/c/50ac517d6f5348b276f1f663799cf85dce521518","https://git.kernel.org/stable/c/5b0f81b0808235967868e01336c976e840217108","https://git.kernel.org/stable/c/14bb4bde3b7b2584734b13747b345caeeb41bea3","https://git.kernel.org/stable/c/17cd8c46cbec4e6ad593fb9159928b8e7608c11a","https://git.kernel.org/stable/c/3cf81501356c9e898ad94b2369ffc805f83f7d7b","https://git.kernel.org/stable/c/379e7794c5e7485193d25d73614fbbd1e1387f6f","https://git.kernel.org/stable/c/87426ce3bd57ad414b6e2436434ef8128986a9a5","https://git.kernel.org/stable/c/727cc0147f5066e359aca65cc6cc5e6d64cc15d8"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50521.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50521","state":"PUBLISHED","datePublished":"2025-10-07T15:19:15.213Z","dateUpdated":"2026-05-11T19:21:02.240Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-10-07T15:15:38.663Z"},"containers":{"cna":{"title":"platform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: mxm-wmi: fix memleak in mxm_wmi_call_mx[ds|mx]()\n\nThe ACPI buffer memory (out.pointer) returned by wmi_evaluate_method()\nis not freed after the call, so it leads to memory leak.\n\nThe method results in ACPI buffer is not used, so just pass NULL to\nwmi_evaluate_method() which fixes the memory leak."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"50ac517d6f5348b276f1f663799cf85dce521518","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"5b0f81b0808235967868e01336c976e840217108","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"14bb4bde3b7b2584734b13747b345caeeb41bea3","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"17cd8c46cbec4e6ad593fb9159928b8e7608c11a","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"3cf81501356c9e898ad94b2369ffc805f83f7d7b","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"379e7794c5e7485193d25d73614fbbd1e1387f6f","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"87426ce3bd57ad414b6e2436434ef8128986a9a5","versionType":"git"},{"version":"99b38b4acc0d7dbbab443273577cff60080fcfad","status":"affected","lessThan":"727cc0147f5066e359aca65cc6cc5e6d64cc15d8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/mxm-wmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.0","versionType":"semver"},{"version":"4.14.303","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.270","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.229","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/platform/x86/mxm-wmi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/50ac517d6f5348b276f1f663799cf85dce521518"},{"url":"https://git.kernel.org/stable/c/5b0f81b0808235967868e01336c976e840217108"},{"url":"https://git.kernel.org/stable/c/14bb4bde3b7b2584734b13747b345caeeb41bea3"},{"url":"https://git.kernel.org/stable/c/17cd8c46cbec4e6ad593fb9159928b8e7608c11a"},{"url":"https://git.kernel.org/stable/c/3cf81501356c9e898ad94b2369ffc805f83f7d7b"},{"url":"https://git.kernel.org/stable/c/379e7794c5e7485193d25d73614fbbd1e1387f6f"},{"url":"https://git.kernel.org/stable/c/87426ce3bd57ad414b6e2436434ef8128986a9a5"},{"url":"https://git.kernel.org/stable/c/727cc0147f5066e359aca65cc6cc5e6d64cc15d8"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:21:02.240Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"4.14.303"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"4.19.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}