{"api_version":"1","generated_at":"2026-04-24T22:09:52+00:00","cve":"CVE-2026-31459","urls":{"html":"https://cve.report/CVE-2026-31459","api":"https://cve.report/api/cve/CVE-2026-31459.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-31459","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-31459"},"summary":{"title":"mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure\n\nPatch series \"mm/damon/sysfs: fix memory leak and NULL dereference\nissues\", v4.\n\nDAMON_SYSFS can leak memory under allocation failure, and do NULL pointer\ndereference when a privileged user make wrong sequences of control.  Fix\nthose.\n\n\nThis patch (of 3):\n\nWhen damon_sysfs_new_test_ctx() fails in damon_sysfs_commit_input(),\nparam_ctx is leaked because the early return skips the cleanup at the out\nlabel.  Destroy param_ctx before returning.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-04-22 14:16:41","updated_at":"2026-04-23 16:17:41"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f76f0a964bc3d7b7e253b43c669c41356bc54e71","name":"https://git.kernel.org/stable/c/f76f0a964bc3d7b7e253b43c669c41356bc54e71","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7fe000eb32904758a85e62f6ea9483f89d5dabfc","name":"https://git.kernel.org/stable/c/7fe000eb32904758a85e62f6ea9483f89d5dabfc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e9de9f3ce06b133a348006668bc8d25c6e504867","name":"https://git.kernel.org/stable/c/e9de9f3ce06b133a348006668bc8d25c6e504867","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-31459","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31459","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f e9de9f3ce06b133a348006668bc8d25c6e504867 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f f76f0a964bc3d7b7e253b43c669c41356bc54e71 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f 7fe000eb32904758a85e62f6ea9483f89d5dabfc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b3609d9b9650bdea0bfdf643e0ce57e1aed67fc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.21 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.11 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"31459","cve":"CVE-2026-31459","epss":"0.000170000","percentile":"0.040460000","score_date":"2026-04-23","updated_at":"2026-04-24 00:02:49"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["mm/damon/sysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e9de9f3ce06b133a348006668bc8d25c6e504867","status":"affected","version":"f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f","versionType":"git"},{"lessThan":"f76f0a964bc3d7b7e253b43c669c41356bc54e71","status":"affected","version":"f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f","versionType":"git"},{"lessThan":"7fe000eb32904758a85e62f6ea9483f89d5dabfc","status":"affected","version":"f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f","versionType":"git"},{"status":"affected","version":"5b3609d9b9650bdea0bfdf643e0ce57e1aed67fc","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["mm/damon/sysfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.21","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.11","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure\n\nPatch series \"mm/damon/sysfs: fix memory leak and NULL dereference\nissues\", v4.\n\nDAMON_SYSFS can leak memory under allocation failure, and do NULL pointer\ndereference when a privileged user make wrong sequences of control.  Fix\nthose.\n\n\nThis patch (of 3):\n\nWhen damon_sysfs_new_test_ctx() fails in damon_sysfs_commit_input(),\nparam_ctx is leaked because the early return skips the cleanup at the out\nlabel.  Destroy param_ctx before returning."}],"providerMetadata":{"dateUpdated":"2026-04-22T13:53:51.554Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e9de9f3ce06b133a348006668bc8d25c6e504867"},{"url":"https://git.kernel.org/stable/c/f76f0a964bc3d7b7e253b43c669c41356bc54e71"},{"url":"https://git.kernel.org/stable/c/7fe000eb32904758a85e62f6ea9483f89d5dabfc"}],"title":"mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-31459","datePublished":"2026-04-22T13:53:51.554Z","dateReserved":"2026-03-09T15:48:24.092Z","dateUpdated":"2026-04-22T13:53:51.554Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-22 14:16:41","lastModifiedDate":"2026-04-23 16:17:41","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"31459","Ordinal":"1","Title":"mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx()","CVE":"CVE-2026-31459","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"31459","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure\n\nPatch series \"mm/damon/sysfs: fix memory leak and NULL dereference\nissues\", v4.\n\nDAMON_SYSFS can leak memory under allocation failure, and do NULL pointer\ndereference when a privileged user make wrong sequences of control.  Fix\nthose.\n\n\nThis patch (of 3):\n\nWhen damon_sysfs_new_test_ctx() fails in damon_sysfs_commit_input(),\nparam_ctx is leaked because the early return skips the cleanup at the out\nlabel.  Destroy param_ctx before returning.","Type":"Description","Title":"mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx()"}]}}}