{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64182","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T07:54:57.039Z","datePublished":"2026-07-19T15:41:05.186Z","dateUpdated":"2026-07-19T15:41:05.186Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-07-19T15:41:05.186Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/base/memory.c"],"versions":[{"version":"5033091de814ab4b5623faed2755f3064e19e2d2","lessThan":"686b4283f82cd630fafd7ca9b03dfc080b3ec8fa","status":"affected","versionType":"git"},{"version":"5033091de814ab4b5623faed2755f3064e19e2d2","lessThan":"ce60d9452a0f2effa72fd20ea270c59ca691d455","status":"affected","versionType":"git"},{"version":"5033091de814ab4b5623faed2755f3064e19e2d2","lessThan":"24840b3139d7415144b81e4f9f4c44670d15bed9","status":"affected","versionType":"git"},{"version":"5033091de814ab4b5623faed2755f3064e19e2d2","lessThan":"8502e2c2d0633f99d94d22ae8dabc10caae1fc2a","status":"affected","versionType":"git"},{"version":"5033091de814ab4b5623faed2755f3064e19e2d2","lessThan":"03a2cc1756a0570f887d624cd6c535ea0cbd4951","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/base/memory.c"],"versions":[{"version":"6.2","status":"affected"},{"version":"0","lessThan":"6.2","status":"unaffected","versionType":"semver"},{"version":"6.6.142","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.92","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.34","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.11","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.142"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.1"}]}]}],"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"}}}}