{"id":"CVE-2026-64521","state":"PUBLISHED","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.","publishedAt":"2026-07-25T09:14:46.709Z","updatedAt":"2026-07-25T09:14:46.709Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","status":"affected","lessThan":"e917713f013423069782ff554935c7a5d4266783","versionType":"git"},{"version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","status":"affected","lessThan":"744ac926c0e55267a10b49b5b72582afef4ad49f","versionType":"git"},{"version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","status":"affected","lessThan":"e72ce029810390eb987a036fb2c8a5da9a23b685","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pinctrl/meson/pinctrl-amlogic-a4.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pinctrl/meson/pinctrl-amlogic-a4.c"]}],"references":["https://git.kernel.org/stable/c/e917713f013423069782ff554935c7a5d4266783","https://git.kernel.org/stable/c/744ac926c0e55267a10b49b5b72582afef4ad49f","https://git.kernel.org/stable/c/e72ce029810390eb987a036fb2c8a5da9a23b685"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64521.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64521","state":"PUBLISHED","datePublished":"2026-07-25T09:14:46.709Z","dateUpdated":"2026-07-25T09:14:46.709Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T15:36:31.794Z"},"containers":{"cna":{"title":"pinctrl: meson: amlogic-a4: fix deadlock issue","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","status":"affected","lessThan":"e917713f013423069782ff554935c7a5d4266783","versionType":"git"},{"version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","status":"affected","lessThan":"744ac926c0e55267a10b49b5b72582afef4ad49f","versionType":"git"},{"version":"6e9be3abb78c2f6c97a51070004a5165702f0ed9","status":"affected","lessThan":"e72ce029810390eb987a036fb2c8a5da9a23b685","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pinctrl/meson/pinctrl-amlogic-a4.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pinctrl/meson/pinctrl-amlogic-a4.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-25T09:14:46.709Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}