{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"1dd99b8f4e143592e12e5a77e7b538bc698116cb","status":"affected","version":"61a2f1460fd03285ea34c1a235f2f50f71e13a1f","versionType":"git"},{"lessThan":"f1db80a67da928a92ba460ede1be52d8941f46be","status":"affected","version":"61a2f1460fd03285ea34c1a235f2f50f71e13a1f","versionType":"git"},{"lessThan":"399d806f998f7a25405fc1b97227e579aead24af","status":"affected","version":"61a2f1460fd03285ea34c1a235f2f50f71e13a1f","versionType":"git"},{"lessThan":"7ed120b1a007bace57c461805519d70e1af44e59","status":"affected","version":"61a2f1460fd03285ea34c1a235f2f50f71e13a1f","versionType":"git"},{"lessThan":"39d163627b51886492bf31f66cb02c94613d2287","status":"affected","version":"61a2f1460fd03285ea34c1a235f2f50f71e13a1f","versionType":"git"},{"lessThan":"f2365a63b02ddea32e7db78b742c2503ec7b81f1","status":"affected","version":"61a2f1460fd03285ea34c1a235f2f50f71e13a1f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"5.19"},{"lessThan":"5.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeConfigurations":[{"negate":false,"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"6.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:*","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"cveId":"CVE-2026-64472","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/mlx5: Fix racy bitfields and tighten struct layout\n\nBitfield operations are not atomic, they use a read-modify-write\npattern, therefore we should be careful not to pack bitfields that\ncan be concurrently updated into the same storage unit.\n\nThis split takes a binary approach: flags that are only modified\npre/post open/close remain bitfields, flags modified from user\naction, including actions that reach across to another device (ex.\nreset) use dedicated storage units.\n\nNote mlx5_vhca_page_tracker.status is relocated to fill the alignment\nhole this split exposes.\n\nBitfield justifications:\n\n  migrate_cap: written only in mlx5vf_cmd_set_migratable() at probe\n  chunk_mode: written only in mlx5vf_cmd_set_migratable() at probe\n  mig_state_cap: written only in mlx5vf_cmd_set_migratable() at probe\n\nDedicated storage units:\n\n  mdev_detach: written in the VF attach/detach event notifier\n               mlx5fv_vf_event() at runtime\n  log_active: written in mlx5vf_start_page_tracker()/\n              mlx5vf_stop_page_tracker() during runtime dirty tracking\n  deferred_reset: written in mlx5vf_state_mutex_unlock()/\n                  mlx5vf_pci_aer_reset_done() during runtime reset handling\n  is_err: set by tracker error handling and dirty-log polling at runtime\n  object_changed: set by tracker event handling and cleared by dirty-log\n                  polling at runtime","epss":{"date":"2026-11-10","percentile":0.0773,"score":0.00181},"exploits":[],"kev":null,"metrics":[{"score":5.5,"severity":"medium","source":"NVD: nvd@nist.gov","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794506590340,"publishedAt":1784969495978,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/1dd99b8f4e143592e12e5a77e7b538bc698116cb"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f1db80a67da928a92ba460ede1be52d8941f46be"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/399d806f998f7a25405fc1b97227e579aead24af"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/7ed120b1a007bace57c461805519d70e1af44e59"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/39d163627b51886492bf31f66cb02c94613d2287"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f2365a63b02ddea32e7db78b742c2503ec7b81f1"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/1dd99b8f4e143592e12e5a77e7b538bc698116cb"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/399d806f998f7a25405fc1b97227e579aead24af"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/39d163627b51886492bf31f66cb02c94613d2287"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/7ed120b1a007bace57c461805519d70e1af44e59"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/f1db80a67da928a92ba460ede1be52d8941f46be"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/f2365a63b02ddea32e7db78b742c2503ec7b81f1"}],"remediation":[{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/1dd99b8f4e143592e12e5a77e7b538bc698116cb"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/399d806f998f7a25405fc1b97227e579aead24af"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/39d163627b51886492bf31f66cb02c94613d2287"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/7ed120b1a007bace57c461805519d70e1af44e59"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/f1db80a67da928a92ba460ede1be52d8941f46be"},{"kind":"fix","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://git.kernel.org/stable/c/f2365a63b02ddea32e7db78b742c2503ec7b81f1"}],"revision":"0c5d4676eea9e58374ba8572638493a8133437deaf11929c37818515c416e97c","sources":[{"modifiedAt":1793983493516,"name":"CNA: Linux","retrievedAt":1793985845741,"url":"https://www.cve.org/CVERecord?id=CVE-2026-64472"},{"modifiedAt":1794506590340,"name":"NVD","retrievedAt":1794507349637,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64472"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794462705228,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-64472"}],"ssvc":{"assessedAt":1793983173414,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"vfio/mlx5: Fix racy bitfields and tighten struct layout","updatedAt":1794507349637}