{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64238", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.772Z", "datePublished": "2026-07-24T15:27:42.482Z", "dateUpdated": "2026-07-24T15:27:42.482Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-24T15:27:42.482Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: shared: fix deadlock on shared proxy's parent removal\n\nCommit 710abda58055 (\"gpio: shared: call gpio_chip::of_xlate() if set\")\nused the mutex embedded in struct gpio_shared_entry to protect the\noffset field which now can be modified after assignment. The critical\nsection however is too wide and introduced a potential deadlock on the\nremoval of the shared GPIO proxy's parent.\n\nMake the critical section shorter - only protect the offset when it's\nbeing read.\n\nWhile at it: mention the fact that the entry lock is now also used to\nprotect against concurrent access to the offset field in the structure's\ndocumentation."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpio/gpiolib-shared.c"], "versions": [{"version": "710abda58055ed5eaa8958107633cc12a365c328", "lessThan": "a554dfcd30dd5e41d1d67387b3bb85cea83e12e1", "status": "affected", "versionType": "git"}, {"version": "710abda58055ed5eaa8958107633cc12a365c328", "lessThan": "a1b836607304f71051f9f9dcccf8b5097b86a1fb", "status": "affected", "versionType": "git"}, {"version": "28f488e7b327630686378bb1d24e22cfc3fc162d", "status": "affected", "versionType": "git"}, {"version": "6.19.12", "lessThan": "6.20", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpio/gpiolib-shared.c"], "versions": [{"version": "7.0", "status": "affected"}, {"version": "0", "lessThan": "7.0", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a554dfcd30dd5e41d1d67387b3bb85cea83e12e1"}, {"url": "https://git.kernel.org/stable/c/a1b836607304f71051f9f9dcccf8b5097b86a1fb"}], "title": "gpio: shared: fix deadlock on shared proxy's parent removal", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpio/gpiolib-shared.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a554dfcd30dd5e41d1d67387b3bb85cea83e12e1", "status": "affected", "version": "710abda58055ed5eaa8958107633cc12a365c328", "versionType": "git"}, {"lessThan": "a1b836607304f71051f9f9dcccf8b5097b86a1fb", "status": "affected", "version": "710abda58055ed5eaa8958107633cc12a365c328", "versionType": "git"}, {"status": "affected", "version": "28f488e7b327630686378bb1d24e22cfc3fc162d", "versionType": "git"}, {"lessThan": "6.20", "status": "affected", "version": "6.19.12", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpio/gpiolib-shared.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.0"}, {"lessThan": "7.0", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.12", "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": "3E8EC0D8-1F19-40EC-8F9E-9E4FCF84758C", "versionEndExcluding": "7.0", "versionStartIncluding": "6.19.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B58924AD-439C-4E2B-A790-4A7874B3921B", "versionEndExcluding": "7.0.12", "versionStartIncluding": "7.0.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:-:*:*:*:*:*:*", "matchCriteriaId": "EF897730-3F1E-47A2-8B07-22535202C487", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138", "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}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: shared: fix deadlock on shared proxy's parent removal\n\nCommit 710abda58055 (\"gpio: shared: call gpio_chip::of_xlate() if set\")\nused the mutex embedded in struct gpio_shared_entry to protect the\noffset field which now can be modified after assignment. The critical\nsection however is too wide and introduced a potential deadlock on the\nremoval of the shared GPIO proxy's parent.\n\nMake the critical section shorter - only protect the offset when it's\nbeing read.\n\nWhile at it: mention the fact that the entry lock is now also used to\nprotect against concurrent access to the offset field in the structure's\ndocumentation."}], "id": "CVE-2026-64238", "lastModified": "2026-08-13T11:53:52.047", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-07-24T16:16:53.090", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a1b836607304f71051f9f9dcccf8b5097b86a1fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a554dfcd30dd5e41d1d67387b3bb85cea83e12e1"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: gpio: shared: fix deadlock on shared proxy's parent removal", "id": "2506780", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2506780"}, "csaw": false, "cwe": "CWE-833", "details": ["A flaw was found in the Linux kernel's `gpio: shared` component. A too wide critical section, intended to protect the `offset` field in the `struct gpio_shared_entry`, can lead to a potential deadlock. This occurs during the removal of a shared General Purpose Input/Output (GPIO) proxy's parent. A successful exploit of this vulnerability could result in a denial of service (DoS) due to system unresponsiveness."], "name": "CVE-2026-64238", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "libkrun", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "impact": "moderate", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Out of support scope", "impact": "moderate", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "impact": "moderate", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-07-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64238\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64238\nhttps://lore.kernel.org/linux-cve-announce/2026072441-CVE-2026-64238-d9d5@gregkh/T"]}