{"api_version":"1","generated_at":"2026-07-20T14:42:12+00:00","cve":"CVE-2026-64182","urls":{"html":"https://cve.report/CVE-2026-64182","api":"https://cve.report/api/cve/CVE-2026-64182.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64182","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64182"},"summary":{"title":"drivers/base/memory: fix memory block reference leak in poison accounting","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/base/memory: fix memory block reference leak in poison accounting\n\nmemblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block\nvia find_memory_block_by_id(), which acquires a reference to the memory\nblock device.\n\nBoth helpers use the returned memory block without dropping that\nreference, leaking the device reference on each successful lookup.  Drop\nthe reference after updating nr_hwpoison.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:18:00","updated_at":"2026-07-19 16:18:00"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a","name":"https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951","name":"https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9","name":"https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa","name":"https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455","name":"https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64182","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64182","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5033091de814ab4b5623faed2755f3064e19e2d2 686b4283f82cd630fafd7ca9b03dfc080b3ec8fa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5033091de814ab4b5623faed2755f3064e19e2d2 ce60d9452a0f2effa72fd20ea270c59ca691d455 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5033091de814ab4b5623faed2755f3064e19e2d2 24840b3139d7415144b81e4f9f4c44670d15bed9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5033091de814ab4b5623faed2755f3064e19e2d2 8502e2c2d0633f99d94d22ae8dabc10caae1fc2a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5033091de814ab4b5623faed2755f3064e19e2d2 03a2cc1756a0570f887d624cd6c535ea0cbd4951 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.142 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.92 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/base/memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"686b4283f82cd630fafd7ca9b03dfc080b3ec8fa","status":"affected","version":"5033091de814ab4b5623faed2755f3064e19e2d2","versionType":"git"},{"lessThan":"ce60d9452a0f2effa72fd20ea270c59ca691d455","status":"affected","version":"5033091de814ab4b5623faed2755f3064e19e2d2","versionType":"git"},{"lessThan":"24840b3139d7415144b81e4f9f4c44670d15bed9","status":"affected","version":"5033091de814ab4b5623faed2755f3064e19e2d2","versionType":"git"},{"lessThan":"8502e2c2d0633f99d94d22ae8dabc10caae1fc2a","status":"affected","version":"5033091de814ab4b5623faed2755f3064e19e2d2","versionType":"git"},{"lessThan":"03a2cc1756a0570f887d624cd6c535ea0cbd4951","status":"affected","version":"5033091de814ab4b5623faed2755f3064e19e2d2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/base/memory.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.142","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.92","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.142","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.92","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/base/memory: fix memory block reference leak in poison accounting\n\nmemblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block\nvia find_memory_block_by_id(), which acquires a reference to the memory\nblock device.\n\nBoth helpers use the returned memory block without dropping that\nreference, leaking the device reference on each successful lookup.  Drop\nthe reference after updating nr_hwpoison."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:41:05.186Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa"},{"url":"https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455"},{"url":"https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9"},{"url":"https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a"},{"url":"https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951"}],"title":"drivers/base/memory: fix memory block reference leak in poison accounting","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64182","datePublished":"2026-07-19T15:41:05.186Z","dateReserved":"2026-07-19T07:54:57.039Z","dateUpdated":"2026-07-19T15:41:05.186Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:18:00","lastModifiedDate":"2026-07-19 16:18:00","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64182","Ordinal":"1","Title":"drivers/base/memory: fix memory block reference leak in poison a","CVE":"CVE-2026-64182","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64182","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/base/memory: fix memory block reference leak in poison accounting\n\nmemblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block\nvia find_memory_block_by_id(), which acquires a reference to the memory\nblock device.\n\nBoth helpers use the returned memory block without dropping that\nreference, leaking the device reference on each successful lookup.  Drop\nthe reference after updating nr_hwpoison.","Type":"Description","Title":"drivers/base/memory: fix memory block reference leak in poison a"}]}}}