{"cvss":9.3,"datePublished":"2026-07-19T16:17:48.607","dateUpdated":"2026-09-03T13:08:19.890","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Snapshot notifier callbacks under lock\n\nBoth notification handlers currently look up a notifier callback under\nnotify_lock, drop the lock, and then dereference the returned\nnotifier entry. A concurrent unregister can delete and free that\nentry in the gap, leaving the handler to dereference stale memory.\n\nCopy the callback pointer and callback data while notify_lock is\nstill held and invoke the callback only after the lock is dropped.\nThis keeps the existing callback execution model while removing the\nuse-after-free window in both the framework and non-framework\nnotification paths.","id":"CVE-2026-64080","raw":{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/firmware/arm_ffa/driver.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d1e38551fadea230649bc428f0f35c9ee062a072","status":"affected","version":"285a5ea0f542db94c3ed11e01a71abb47d15cbf5","versionType":"git"},{"lessThan":"0e7be42ef2490f19d859a6146324d48cafdc9d5c","status":"affected","version":"285a5ea0f542db94c3ed11e01a71abb47d15cbf5","versionType":"git"},{"lessThan":"38290b180a4d5746baed796d49f88d56d2f336cd","status":"affected","version":"285a5ea0f542db94c3ed11e01a71abb47d15cbf5","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/firmware/arm_ffa/driver.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","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"}]}],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","matchCriteriaId":"89E9B97C-FD82-4D2E-8426-3A1A703B2ED7","versionEndExcluding":"6.18.34","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","matchCriteriaId":"0520D091-FC52-4A50-AF07-70AE7D08B750","versionEndExcluding":"7.0.11","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*","matchCriteriaId":"B1EF7059-E670-45F4-B422-54C40FA86390","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*","matchCriteriaId":"0D38F0BF-A728-4133-A358-D44A2F7EE6D6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*","matchCriteriaId":"EC732D08-5F7B-46D9-B154-E60C7F4F0A97","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*","matchCriteriaId":"E5910A9D-F60A-409A-B486-FE66BFEBA9B9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Snapshot notifier callbacks under lock\n\nBoth notification handlers currently look up a notifier callback under\nnotify_lock, drop the lock, and then dereference the returned\nnotifier entry. A concurrent unregister can delete and free that\nentry in the gap, leaving the handler to dereference stale memory.\n\nCopy the callback pointer and callback data while notify_lock is\nstill held and invoke the callback only after the lock is dropped.\nThis keeps the existing callback execution model while removing the\nuse-after-free window in both the framework and non-framework\nnotification paths."}],"id":"CVE-2026-64080","lastModified":"2026-09-03T13:08:19.890","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":9.3,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":2.5,"impactScore":6.0,"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary"}]},"published":"2026-07-19T16:17:48.607","references":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/0e7be42ef2490f19d859a6146324d48cafdc9d5c"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/38290b180a4d5746baed796d49f88d56d2f336cd"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"url":"https://git.kernel.org/stable/c/d1e38551fadea230649bc428f0f35c9ee062a072"}],"sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","vulnStatus":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-416"}],"source":"nvd@nist.gov","type":"Primary"}]},"severity":"CRITICAL","source":"nvd","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Snapshot notifier callbacks u..."}