CVE-2026-93276

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93276", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.098Z", "datePublished": "2026-09-24T15:52:18.567Z", "dateUpdated": "2026-10-19T09:08:30.634Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:08:30.634Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator\n\ndevm_regulator_get_exclusive() initialises the regulator with\nenable_count = 1, requiring the consumer to disable it before release.\n\nThe devm disable action was previously only registered when the caller\nexplicitly requested enable, so when the regulator was left in its initial\nenabled state without an explicit enable call, the cleanup path skipped\ndecrementing enable_count, triggering a WARN_ON during regulator\nrelease on device removal.\n\nFix this by always registering the devm disable action based on the actual\nenabled state via regulator_is_enabled(), regardless of whether the\ncaller requested an explicit enable. This covers both the explicitly\nenabled case and the initial state set by devm_regulator_get_exclusive()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/phy/renesas/phy-rcar-gen3-usb2.c"], "versions": [{"version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db", "lessThan": "bf7fefbc26e292c08cfe7b6496b879109ef1475a", "status": "affected", "versionType": "git"}, {"version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db", "lessThan": "935f6e837a83b86b073a7601f699dc2c00e01322", "status": "affected", "versionType": "git"}, {"version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db", "lessThan": "49c9b71b45081e5e5eeb507a2d6edb80d332dc59", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/phy/renesas/phy-rcar-gen3-usb2.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "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": "6.11", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/bf7fefbc26e292c08cfe7b6496b879109ef1475a"}, {"url": "https://git.kernel.org/stable/c/935f6e837a83b86b073a7601f699dc2c00e01322"}, {"url": "https://git.kernel.org/stable/c/49c9b71b45081e5e5eeb507a2d6edb80d332dc59"}], "title": "phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/phy/renesas/phy-rcar-gen3-usb2.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "bf7fefbc26e292c08cfe7b6496b879109ef1475a", "status": "affected", "version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db", "versionType": "git"}, {"lessThan": "935f6e837a83b86b073a7601f699dc2c00e01322", "status": "affected", "version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db", "versionType": "git"}, {"lessThan": "49c9b71b45081e5e5eeb507a2d6edb80d332dc59", "status": "affected", "version": "24843404efe47eab1ee88d7475a0be0f2f6fd9db", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/phy/renesas/phy-rcar-gen3-usb2.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "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\nphy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator\n\ndevm_regulator_get_exclusive() initialises the regulator with\nenable_count = 1, requiring the consumer to disable it before release.\n\nThe devm disable action was previously only registered when the caller\nexplicitly requested enable, so when the regulator was left in its initial\nenabled state without an explicit enable call, the cleanup path skipped\ndecrementing enable_count, triggering a WARN_ON during regulator\nrelease on device removal.\n\nFix this by always registering the devm disable action based on the actual\nenabled state via regulator_is_enabled(), regardless of whether the\ncaller requested an explicit enable. This covers both the explicitly\nenabled case and the initial state set by devm_regulator_get_exclusive()."}], "id": "CVE-2026-93276", "lastModified": "2026-10-19T10:17:19.130", "metrics": {}, "published": "2026-09-24T16:17:24.797", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/49c9b71b45081e5e5eeb507a2d6edb80d332dc59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/935f6e837a83b86b073a7601f699dc2c00e01322"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf7fefbc26e292c08cfe7b6496b879109ef1475a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: phy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator", "id": "2540366", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540366"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-459", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nphy: renesas: phy-rcar-gen3-usb2: Fix devm action registration for disabled VBUS regulator\ndevm_regulator_get_exclusive() initialises the regulator with\nenable_count = 1, requiring the consumer to disable it before release.\nThe devm disable action was previously only registered when the caller\nexplicitly requested enable, so when the regulator was left in its initial\nenabled state without an explicit enable call, the cleanup path skipped\ndecrementing enable_count, triggering a WARN_ON during regulator\nrelease on device removal.\nFix this by always registering the devm disable action based on the actual\nenabled state via regulator_is_enabled(), regardless of whether the\ncaller requested an explicit enable. This covers both the explicitly\nenabled case and the initial state set by devm_regulator_get_exclusive().", "A flaw was found in the Linux kernel's Renesas R-Car USB 2.0 PHY driver. A local user could cause a denial of service (DoS) by unbinding or removing the affected device. Because the driver fails to properly register a power regulator cleanup routine during initialization, device removal leaves the regulator in an inconsistent state and triggers a kernel warning condition, which can crash the system if configured to halt on warnings."], "name": "CVE-2026-93276", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Not affected", "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": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-93276\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93276\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93276.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[24843404efe47eab1ee88d7475a0be0f2f6fd9db,bf7fefbc26e292c08cfe7b6496b879109ef1475a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[24843404efe47eab1ee88d7475a0be0f2f6fd9db,935f6e837a83b86b073a7601f699dc2c00e01322)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[24843404efe47eab1ee88d7475a0be0f2f6fd9db,49c9b71b45081e5e5eeb507a2d6edb80d332dc59)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-25T06:15:16.975052+00:00", "updated": "2026-10-01T17:45:09.990986+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-459"]}