CVE-2026-99021

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99021", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.386Z", "datePublished": "2026-10-23T12:21:00.951Z", "dateUpdated": "2026-11-10T18:15:22.599Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-10T18:15:22.599Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: of: fill in supply names in of_regulator_bulk_get_all()\n\nof_regulator_bulk_get_all() returns an array it allocated itself, and\nfills in only the consumer of each entry. Every other way of getting a\nbulk array has the supply name set, because the caller provides it, and\nthe core expects it to be there: regulator_bulk_enable() prints it when\na supply fails to enable, so a caller that hands such an array to it\ndereferences uninitialised memory on that path.\n\nCopy each name into the array's own allocation, right behind the\nentries, so that it shares the array's lifetime and callers still have\nnothing extra to free. That also retires the fixed 64 byte stack buffer\nthe names were assembled in, which is_supply_name() never bounded the\ncopy against."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/regulator/of_regulator.c"], "versions": [{"version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "lessThan": "a5f43540e14589b53f80306d25c043c0abdcbca0", "status": "affected", "versionType": "git"}, {"version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "lessThan": "82ac8c4939bdbd064b4f54a580fbe4baf0d60e41", "status": "affected", "versionType": "git"}, {"version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "lessThan": "a3384ec2516a7cc567bd7c09029282494469b247", "status": "affected", "versionType": "git"}, {"version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "lessThan": "e2151c29cec73f6cc70abf1c7cbc7b9b202489f5", "status": "affected", "versionType": "git"}, {"version": "fd5015686d898db6642e05cfa1cc4e1289631ecb", "status": "affected", "versionType": "git"}, {"version": "6.1.110", "lessThan": "6.2", "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/regulator/of_regulator.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.117", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.11", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.2", "versionEndExcluding": "6.12.117"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.110"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a5f43540e14589b53f80306d25c043c0abdcbca0"}, {"url": "https://git.kernel.org/stable/c/82ac8c4939bdbd064b4f54a580fbe4baf0d60e41"}, {"url": "https://git.kernel.org/stable/c/a3384ec2516a7cc567bd7c09029282494469b247"}, {"url": "https://git.kernel.org/stable/c/e2151c29cec73f6cc70abf1c7cbc7b9b202489f5"}], "title": "regulator: of: fill in supply names in of_regulator_bulk_get_all()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/regulator/of_regulator.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a5f43540e14589b53f80306d25c043c0abdcbca0", "status": "affected", "version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "versionType": "git"}, {"lessThan": "82ac8c4939bdbd064b4f54a580fbe4baf0d60e41", "status": "affected", "version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "versionType": "git"}, {"lessThan": "a3384ec2516a7cc567bd7c09029282494469b247", "status": "affected", "version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "versionType": "git"}, {"lessThan": "e2151c29cec73f6cc70abf1c7cbc7b9b202489f5", "status": "affected", "version": "27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7", "versionType": "git"}, {"status": "affected", "version": "fd5015686d898db6642e05cfa1cc4e1289631ecb", "versionType": "git"}, {"lessThan": "6.2", "status": "affected", "version": "6.1.110", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/regulator/of_regulator.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.2"}, {"lessThan": "6.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.117", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.11", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nregulator: of: fill in supply names in of_regulator_bulk_get_all()\n\nof_regulator_bulk_get_all() returns an array it allocated itself, and\nfills in only the consumer of each entry. Every other way of getting a\nbulk array has the supply name set, because the caller provides it, and\nthe core expects it to be there: regulator_bulk_enable() prints it when\na supply fails to enable, so a caller that hands such an array to it\ndereferences uninitialised memory on that path.\n\nCopy each name into the array's own allocation, right behind the\nentries, so that it shares the array's lifetime and callers still have\nnothing extra to free. That also retires the fixed 64 byte stack buffer\nthe names were assembled in, which is_supply_name() never bounded the\ncopy against."}], "id": "CVE-2026-99021", "lastModified": "2026-11-10T19:22:29.510", "metrics": {}, "published": "2026-10-23T13:17:25.013", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/82ac8c4939bdbd064b4f54a580fbe4baf0d60e41"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a3384ec2516a7cc567bd7c09029282494469b247"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a5f43540e14589b53f80306d25c043c0abdcbca0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e2151c29cec73f6cc70abf1c7cbc7b9b202489f5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: regulator: of: fill in supply names in of_regulator_bulk_get_all()", "id": "2559706", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559706"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nregulator: of: fill in supply names in of_regulator_bulk_get_all()\nof_regulator_bulk_get_all() returns an array it allocated itself, and\nfills in only the consumer of each entry. Every other way of getting a\nbulk array has the supply name set, because the caller provides it, and\nthe core expects it to be there: regulator_bulk_enable() prints it when\na supply fails to enable, so a caller that hands such an array to it\ndereferences uninitialised memory on that path.\nCopy each name into the array's own allocation, right behind the\nentries, so that it shares the array's lifetime and callers still have\nnothing extra to free. That also retires the fixed 64 byte stack buffer\nthe names were assembled in, which is_supply_name() never bounded the\ncopy against.", "A flaw was found in the Linux kernel's regulator subsystem. A local attacker could exploit this vulnerability to cause a Denial of Service (DoS) by triggering a system crash. When processing bulk regulator requests, the kernel fails to populate the power supply names in the allocated memory array. If a regulator subsequently fails to enable, the error-handling path attempts to access the uninitialized supply name, resulting in an uninitialized memory dereference and a kernel crash."], "name": "CVE-2026-99021", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99021\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99021\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99021.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7,82ac8c4939bdbd064b4f54a580fbe4baf0d60e41)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7,a3384ec2516a7cc567bd7c09029282494469b247)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7,e2151c29cec73f6cc70abf1c7cbc7b9b202489f5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "fd5015686d898db6642e05cfa1cc4e1289631ecb"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.110,6.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.57,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.11,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7,82ac8c4939bdbd064b4f54a580fbe4baf0d60e41)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7,a3384ec2516a7cc567bd7c09029282494469b247)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7,e2151c29cec73f6cc70abf1c7cbc7b9b202489f5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "fd5015686d898db6642e05cfa1cc4e1289631ecb"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.110,6.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.57,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.11,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-23T15:30:14.846133+00:00", "updated": "2026-10-29T19:15:08.627716+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}