{"api_version":"1","generated_at":"2026-07-29T11:12:29+00:00","cve":"CVE-2026-64420","urls":{"html":"https://cve.report/CVE-2026-64420","api":"https://cve.report/api/cve/CVE-2026-64420.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64420","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64420"},"summary":{"title":"mfd: cros_ec: Delay dev_set_drvdata() until probe success","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmfd: cros_ec: Delay dev_set_drvdata() until probe success\n\nIf ec_device_probe() fails, cros_ec_class_release releases memory for the\ncros_ec_dev structure. However, because the drvdata was already set,\nsub-drivers like cros_ec_typec can still retrieve the stale pointer via the\nplatform device. This leads to a use-after-free when cros_ec_typec attempts\nto access &typec->ec->ec->dev on a device that has already been released.\nMove dev_set_drvdata() to ensure that the pointer is only made available\nonce all initialization steps have succeeded.\n\n sysfs: cannot create duplicate filename '/class/chromeos/cros_ec'\n Call trace:\n  sysfs_do_create_link_sd+0x94/0xdc\n  sysfs_create_link+0x30/0x44\n  device_add_class_symlinks+0x90/0x13c\n  device_add+0xf0/0x50c\n  ec_device_probe+0x150/0x4f0\n  platform_probe+0xa0/0xe0\n ...\n BUG: KASAN: invalid-access in __memcpy+0x44/0x230\n Write at addr f5ffff809e2d33ac by task kworker/u32:5/125\n Pointer tag: [f5], memory tag: [fe]\n Tainted : [W]=WARN, [O]=OOT_MODULE\n Hardware name: Google Navi unprovisioned 0x7FFFFFFF/sku0 board/sku3\n Workqueue: events_unbound deferred_probe_work_func\n Call trace:\n  __memcpy+0x44/0x230\n  cros_ec_check_features+0x60/0xcc [cros_ec_proto]\n  cros_typec_probe+0xe8/0x6e0 [cros_ec_typec]\n  platform_probe+0xa0/0xe0","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:25","updated_at":"2026-07-27 05:16:48"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/fc030c5b116f668d4ca86dca63742ddbc98d1665","name":"https://git.kernel.org/stable/c/fc030c5b116f668d4ca86dca63742ddbc98d1665","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d","name":"https://git.kernel.org/stable/c/b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/729ae27dc2503a7c1f92da1859efb45da03e4fa0","name":"https://git.kernel.org/stable/c/729ae27dc2503a7c1f92da1859efb45da03e4fa0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/24522713034d521ea4b5f5f36342e2b2f7e73bd6","name":"https://git.kernel.org/stable/c/24522713034d521ea4b5f5f36342e2b2f7e73bd6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8b2c1d41bc36c100b38ce5ee6def246c527eaf8a","name":"https://git.kernel.org/stable/c/8b2c1d41bc36c100b38ce5ee6def246c527eaf8a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ed2941e5db016a0c600b25f1972620e6e223d9fa","name":"https://git.kernel.org/stable/c/ed2941e5db016a0c600b25f1972620e6e223d9fa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f7e81dc181d9fe8ab977158042cd193e8cc12091","name":"https://git.kernel.org/stable/c/f7e81dc181d9fe8ab977158042cd193e8cc12091","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/257203d83204b192d1265a916b42ca0d499bb117","name":"https://git.kernel.org/stable/c/257203d83204b192d1265a916b42ca0d499bb117","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64420","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64420","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b 24522713034d521ea4b5f5f36342e2b2f7e73bd6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b f7e81dc181d9fe8ab977158042cd193e8cc12091 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b 257203d83204b192d1265a916b42ca0d499bb117 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b 729ae27dc2503a7c1f92da1859efb45da03e4fa0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b ed2941e5db016a0c600b25f1972620e6e223d9fa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b fc030c5b116f668d4ca86dca63742ddbc98d1665 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b 8b2c1d41bc36c100b38ce5ee6def246c527eaf8a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64420","cve":"CVE-2026-64420","epss":"0.001180000","percentile":"0.020140000","score_date":"2026-07-28","updated_at":"2026-07-29 00:05:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/mfd/cros_ec_dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"24522713034d521ea4b5f5f36342e2b2f7e73bd6","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"},{"lessThan":"f7e81dc181d9fe8ab977158042cd193e8cc12091","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"},{"lessThan":"257203d83204b192d1265a916b42ca0d499bb117","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"},{"lessThan":"729ae27dc2503a7c1f92da1859efb45da03e4fa0","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"},{"lessThan":"ed2941e5db016a0c600b25f1972620e6e223d9fa","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"},{"lessThan":"b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"},{"lessThan":"fc030c5b116f668d4ca86dca63742ddbc98d1665","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"},{"lessThan":"8b2c1d41bc36c100b38ce5ee6def246c527eaf8a","status":"affected","version":"1c1d152cc5ac3a67d199728a9ba0b4f54a498f8b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/mfd/cros_ec_dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","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":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmfd: cros_ec: Delay dev_set_drvdata() until probe success\n\nIf ec_device_probe() fails, cros_ec_class_release releases memory for the\ncros_ec_dev structure. However, because the drvdata was already set,\nsub-drivers like cros_ec_typec can still retrieve the stale pointer via the\nplatform device. This leads to a use-after-free when cros_ec_typec attempts\nto access &typec->ec->ec->dev on a device that has already been released.\nMove dev_set_drvdata() to ensure that the pointer is only made available\nonce all initialization steps have succeeded.\n\n sysfs: cannot create duplicate filename '/class/chromeos/cros_ec'\n Call trace:\n  sysfs_do_create_link_sd+0x94/0xdc\n  sysfs_create_link+0x30/0x44\n  device_add_class_symlinks+0x90/0x13c\n  device_add+0xf0/0x50c\n  ec_device_probe+0x150/0x4f0\n  platform_probe+0xa0/0xe0\n ...\n BUG: KASAN: invalid-access in __memcpy+0x44/0x230\n Write at addr f5ffff809e2d33ac by task kworker/u32:5/125\n Pointer tag: [f5], memory tag: [fe]\n Tainted : [W]=WARN, [O]=OOT_MODULE\n Hardware name: Google Navi unprovisioned 0x7FFFFFFF/sku0 board/sku3\n Workqueue: events_unbound deferred_probe_work_func\n Call trace:\n  __memcpy+0x44/0x230\n  cros_ec_check_features+0x60/0xcc [cros_ec_proto]\n  cros_typec_probe+0xe8/0x6e0 [cros_ec_typec]\n  platform_probe+0xa0/0xe0"}],"metrics":[{"cvssV3_1":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-27T05:00:47.741Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/24522713034d521ea4b5f5f36342e2b2f7e73bd6"},{"url":"https://git.kernel.org/stable/c/f7e81dc181d9fe8ab977158042cd193e8cc12091"},{"url":"https://git.kernel.org/stable/c/257203d83204b192d1265a916b42ca0d499bb117"},{"url":"https://git.kernel.org/stable/c/729ae27dc2503a7c1f92da1859efb45da03e4fa0"},{"url":"https://git.kernel.org/stable/c/ed2941e5db016a0c600b25f1972620e6e223d9fa"},{"url":"https://git.kernel.org/stable/c/b5f41d5bf08e7b1b14fa0bd640975e6d78dc006d"},{"url":"https://git.kernel.org/stable/c/fc030c5b116f668d4ca86dca63742ddbc98d1665"},{"url":"https://git.kernel.org/stable/c/8b2c1d41bc36c100b38ce5ee6def246c527eaf8a"}],"title":"mfd: cros_ec: Delay dev_set_drvdata() until probe success","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64420","datePublished":"2026-07-25T08:50:59.115Z","dateReserved":"2026-07-19T15:36:31.786Z","dateUpdated":"2026-07-27T05:00:47.741Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:25","lastModifiedDate":"2026-07-27 05:16:48","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64420","Ordinal":"1","Title":"mfd: cros_ec: Delay dev_set_drvdata() until probe success","CVE":"CVE-2026-64420","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64420","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmfd: cros_ec: Delay dev_set_drvdata() until probe success\n\nIf ec_device_probe() fails, cros_ec_class_release releases memory for the\ncros_ec_dev structure. However, because the drvdata was already set,\nsub-drivers like cros_ec_typec can still retrieve the stale pointer via the\nplatform device. This leads to a use-after-free when cros_ec_typec attempts\nto access &typec->ec->ec->dev on a device that has already been released.\nMove dev_set_drvdata() to ensure that the pointer is only made available\nonce all initialization steps have succeeded.\n\n sysfs: cannot create duplicate filename '/class/chromeos/cros_ec'\n Call trace:\n  sysfs_do_create_link_sd+0x94/0xdc\n  sysfs_create_link+0x30/0x44\n  device_add_class_symlinks+0x90/0x13c\n  device_add+0xf0/0x50c\n  ec_device_probe+0x150/0x4f0\n  platform_probe+0xa0/0xe0\n ...\n BUG: KASAN: invalid-access in __memcpy+0x44/0x230\n Write at addr f5ffff809e2d33ac by task kworker/u32:5/125\n Pointer tag: [f5], memory tag: [fe]\n Tainted : [W]=WARN, [O]=OOT_MODULE\n Hardware name: Google Navi unprovisioned 0x7FFFFFFF/sku0 board/sku3\n Workqueue: events_unbound deferred_probe_work_func\n Call trace:\n  __memcpy+0x44/0x230\n  cros_ec_check_features+0x60/0xcc [cros_ec_proto]\n  cros_typec_probe+0xe8/0x6e0 [cros_ec_typec]\n  platform_probe+0xa0/0xe0","Type":"Description","Title":"mfd: cros_ec: Delay dev_set_drvdata() until probe success"}]}}}