{"api_version":"1","generated_at":"2026-06-04T12:45:09+00:00","cve":"CVE-2026-46007","urls":{"html":"https://cve.report/CVE-2026-46007","api":"https://cve.report/api/cve/CVE-2026-46007.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-46007","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-46007"},"summary":{"title":"hwmon: (powerz) Avoid cacheline sharing for DMA buffer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Avoid cacheline sharing for DMA buffer\n\nDepending on the architecture the transfer buffer may share a cacheline\nwith the following mutex. As the buffer may be used for DMA, that is\nproblematic.\n\nUse the high-level DMA helpers to make sure that cacheline sharing can\nnot happen.\n\nAlso drop the comment, as the helpers are documentation enough.\n\nhttps://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-27 14:17:18","updated_at":"2026-05-27 14:48:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3023c050af3600bf451153335dea5e073c9a3088","name":"https://git.kernel.org/stable/c/3023c050af3600bf451153335dea5e073c9a3088","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/270e5c576a6e30f6b337fa91d35b44c241297533","name":"https://git.kernel.org/stable/c/270e5c576a6e30f6b337fa91d35b44c241297533","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1869da3efe703b016b23d4885f3fe6c1751959c6","name":"https://git.kernel.org/stable/c/1869da3efe703b016b23d4885f3fe6c1751959c6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2fa2273016a0483217404cfe330967c4ac6832a9","name":"https://git.kernel.org/stable/c/2fa2273016a0483217404cfe330967c4ac6832a9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-46007","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46007","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 270e5c576a6e30f6b337fa91d35b44c241297533 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 1869da3efe703b016b23d4885f3fe6c1751959c6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 2fa2273016a0483217404cfe330967c4ac6832a9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 3023c050af3600bf451153335dea5e073c9a3088 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.88 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.30 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.4 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"46007","cve":"CVE-2026-46007","epss":"0.000180000","percentile":"0.048460000","score_date":"2026-06-01","updated_at":"2026-06-02 00:05:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/hwmon/powerz.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"270e5c576a6e30f6b337fa91d35b44c241297533","status":"affected","version":"4381a36abdf1c5c0323c1c51f869dc000115eb20","versionType":"git"},{"lessThan":"1869da3efe703b016b23d4885f3fe6c1751959c6","status":"affected","version":"4381a36abdf1c5c0323c1c51f869dc000115eb20","versionType":"git"},{"lessThan":"2fa2273016a0483217404cfe330967c4ac6832a9","status":"affected","version":"4381a36abdf1c5c0323c1c51f869dc000115eb20","versionType":"git"},{"lessThan":"3023c050af3600bf451153335dea5e073c9a3088","status":"affected","version":"4381a36abdf1c5c0323c1c51f869dc000115eb20","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/hwmon/powerz.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.7"},{"lessThan":"6.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.88","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.30","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.4","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1-rc1","versionStartIncluding":"6.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Avoid cacheline sharing for DMA buffer\n\nDepending on the architecture the transfer buffer may share a cacheline\nwith the following mutex. As the buffer may be used for DMA, that is\nproblematic.\n\nUse the high-level DMA helpers to make sure that cacheline sharing can\nnot happen.\n\nAlso drop the comment, as the helpers are documentation enough.\n\nhttps://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org"}],"providerMetadata":{"dateUpdated":"2026-05-27T12:56:06.623Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/270e5c576a6e30f6b337fa91d35b44c241297533"},{"url":"https://git.kernel.org/stable/c/1869da3efe703b016b23d4885f3fe6c1751959c6"},{"url":"https://git.kernel.org/stable/c/2fa2273016a0483217404cfe330967c4ac6832a9"},{"url":"https://git.kernel.org/stable/c/3023c050af3600bf451153335dea5e073c9a3088"}],"title":"hwmon: (powerz) Avoid cacheline sharing for DMA buffer","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-46007","datePublished":"2026-05-27T12:56:06.623Z","dateReserved":"2026-05-13T15:03:33.092Z","dateUpdated":"2026-05-27T12:56:06.623Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-27 14:17:18","lastModifiedDate":"2026-05-27 14:48:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"46007","Ordinal":"1","Title":"hwmon: (powerz) Avoid cacheline sharing for DMA buffer","CVE":"CVE-2026-46007","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"46007","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Avoid cacheline sharing for DMA buffer\n\nDepending on the architecture the transfer buffer may share a cacheline\nwith the following mutex. As the buffer may be used for DMA, that is\nproblematic.\n\nUse the high-level DMA helpers to make sure that cacheline sharing can\nnot happen.\n\nAlso drop the comment, as the helpers are documentation enough.\n\nhttps://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org","Type":"Description","Title":"hwmon: (powerz) Avoid cacheline sharing for DMA buffer"}]}}}