{"id":"CVE-2022-50391","state":"PUBLISHED","title":"mm/mempolicy: fix memory leak in set_mempolicy_home_node system call","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempolicy: fix memory leak in set_mempolicy_home_node system call\n\nWhen encountering any vma in the range with policy other than MPOL_BIND or\nMPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on\nthe policy just allocated with mpol_dup().\n\nThis allows arbitrary users to leak kernel memory.","publishedAt":"2025-09-18T13:33:10.768Z","updatedAt":"2026-05-11T19:18:37.743Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0","status":"affected","lessThan":"4ca0eb6b2f3add8c5daefb726ce57dc95d103d33","versionType":"git"},{"version":"c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0","status":"affected","lessThan":"0ce4cc6d269ddc448a825955b495f662f5d9e153","versionType":"git"},{"version":"c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0","status":"affected","lessThan":"38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/mempolicy.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"6.0.17","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.3","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":["mm/mempolicy.c"]}],"references":["https://git.kernel.org/stable/c/4ca0eb6b2f3add8c5daefb726ce57dc95d103d33","https://git.kernel.org/stable/c/0ce4cc6d269ddc448a825955b495f662f5d9e153","https://git.kernel.org/stable/c/38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50391.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50391","state":"PUBLISHED","datePublished":"2025-09-18T13:33:10.768Z","dateUpdated":"2026-05-11T19:18:37.743Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-17T14:53:06.998Z"},"containers":{"cna":{"title":"mm/mempolicy: fix memory leak in set_mempolicy_home_node system call","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/mempolicy: fix memory leak in set_mempolicy_home_node system call\n\nWhen encountering any vma in the range with policy other than MPOL_BIND or\nMPOL_PREFERRED_MANY, an error is returned without issuing a mpol_put on\nthe policy just allocated with mpol_dup().\n\nThis allows arbitrary users to leak kernel memory."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0","status":"affected","lessThan":"4ca0eb6b2f3add8c5daefb726ce57dc95d103d33","versionType":"git"},{"version":"c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0","status":"affected","lessThan":"0ce4cc6d269ddc448a825955b495f662f5d9e153","versionType":"git"},{"version":"c6018b4b254971863bd0ad36bb5e7d0fa0f0ddb0","status":"affected","lessThan":"38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/mempolicy.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.17","versionType":"semver"},{"version":"6.0.17","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.3","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":["mm/mempolicy.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4ca0eb6b2f3add8c5daefb726ce57dc95d103d33"},{"url":"https://git.kernel.org/stable/c/0ce4cc6d269ddc448a825955b495f662f5d9e153"},{"url":"https://git.kernel.org/stable/c/38ce7c9bdfc228c14d7621ba36d3eebedd9d4f76"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:18:37.743Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.0.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.1.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2022-50391","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T18:50:30.804160Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T18:53:05.420Z"}}]}}}