{"api_version":"1","generated_at":"2026-07-27T03:40:09+00:00","cve":"CVE-2026-64521","urls":{"html":"https://cve.report/CVE-2026-64521","api":"https://cve.report/api/cve/CVE-2026-64521.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64521","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64521"},"summary":{"title":"pinctrl: meson: amlogic-a4: fix deadlock issue","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: meson: amlogic-a4: fix deadlock issue\n\nAccessing the pinconf-pins sysfs node may deadlock.\n\npinconf_pins_show() holds pctldev->mutex, and the platform driver\ncalls pinctrl_find_gpio_range_from_pin(), which tries to acquire\nthe same mutex again, leading to a deadlock.\n\nUse pinctrl_find_gpio_range_from_pin_nolock() to fix this issue.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:38","updated_at":"2026-07-25 10:17:38"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/e917713f013423069782ff554935c7a5d4266783","name":"https://git.kernel.org/stable/c/e917713f013423069782ff554935c7a5d4266783","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/744ac926c0e55267a10b49b5b72582afef4ad49f","name":"https://git.kernel.org/stable/c/744ac926c0e55267a10b49b5b72582afef4ad49f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e72ce029810390eb987a036fb2c8a5da9a23b685","name":"https://git.kernel.org/stable/c/e72ce029810390eb987a036fb2c8a5da9a23b685","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64521","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64521","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6e9be3abb78c2f6c97a51070004a5165702f0ed9 e917713f013423069782ff554935c7a5d4266783 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6e9be3abb78c2f6c97a51070004a5165702f0ed9 744ac926c0e55267a10b49b5b72582afef4ad49f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6e9be3abb78c2f6c97a51070004a5165702f0ed9 e72ce029810390eb987a036fb2c8a5da9a23b685 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64521","cve":"CVE-2026-64521","epss":"0.001660000","percentile":"0.062480000","score_date":"2026-07-26","updated_at":"2026-07-27 00:02:02"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/pinctrl/meson/pinctrl-amlogic-a4.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e917713f013423069782ff554935c7a5d4266783","status":"affected","version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","versionType":"git"},{"lessThan":"744ac926c0e55267a10b49b5b72582afef4ad49f","status":"affected","version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","versionType":"git"},{"lessThan":"e72ce029810390eb987a036fb2c8a5da9a23b685","status":"affected","version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/pinctrl/meson/pinctrl-amlogic-a4.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"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: meson: amlogic-a4: fix deadlock issue\n\nAccessing the pinconf-pins sysfs node may deadlock.\n\npinconf_pins_show() holds pctldev->mutex, and the platform driver\ncalls pinctrl_find_gpio_range_from_pin(), which tries to acquire\nthe same mutex again, leading to a deadlock.\n\nUse pinctrl_find_gpio_range_from_pin_nolock() to fix this issue."}],"providerMetadata":{"dateUpdated":"2026-07-25T09:14:46.709Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e917713f013423069782ff554935c7a5d4266783"},{"url":"https://git.kernel.org/stable/c/744ac926c0e55267a10b49b5b72582afef4ad49f"},{"url":"https://git.kernel.org/stable/c/e72ce029810390eb987a036fb2c8a5da9a23b685"}],"title":"pinctrl: meson: amlogic-a4: fix deadlock issue","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64521","datePublished":"2026-07-25T09:14:46.709Z","dateReserved":"2026-07-19T15:36:31.794Z","dateUpdated":"2026-07-25T09:14:46.709Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:38","lastModifiedDate":"2026-07-25 10:17:38","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64521","Ordinal":"1","Title":"pinctrl: meson: amlogic-a4: fix deadlock issue","CVE":"CVE-2026-64521","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64521","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\npinctrl: meson: amlogic-a4: fix deadlock issue\n\nAccessing the pinconf-pins sysfs node may deadlock.\n\npinconf_pins_show() holds pctldev->mutex, and the platform driver\ncalls pinctrl_find_gpio_range_from_pin(), which tries to acquire\nthe same mutex again, leading to a deadlock.\n\nUse pinctrl_find_gpio_range_from_pin_nolock() to fix this issue.","Type":"Description","Title":"pinctrl: meson: amlogic-a4: fix deadlock issue"}]}}}