CVE-2026-93283

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93283", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-17T16:02:15.098Z", "datePublished": "2026-09-24T15:52:26.252Z", "dateUpdated": "2026-10-19T09:08:37.502Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:08:37.502Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix device_register() error path\n\nWhen device_register() fails in i3c_master_register_new_i3c_devs(),\nput_device() is called to drop the reference taken by\ndevice_register(). That drops the last reference, so the device's\nrelease callback i3c_device_release() runs and frees the i3c_device.\n\nTwo problems follow from that:\n\ni3c_device_release() does WARN_ON(i3cdev->desc), so it warns because\ndesc->dev->desc still points back at the descriptor. Clear it before\ncalling put_device().\n\nAfter put_device() frees the i3c_device, desc->dev is left pointing at\nfreed memory, so clear desc->dev as well. That prevents, for example,\ni3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and\ndereferencing it."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/i3c/master.c"], "versions": [{"version": "1832ed55df45f4145335ad992fb83813cdc58b5d", "lessThan": "5bf498623f8397d45f85f14cd631c5e5a565c2fb", "status": "affected", "versionType": "git"}, {"version": "d48fe8d98171e0fffdeaa8b37ce0a6444bff819b", "lessThan": "20a2b6df91fd782ef2ff551febef594d0b46a9a7", "status": "affected", "versionType": "git"}, {"version": "174ae0a3b89e7804e4ea3d31bd83d6e43f39568c", "lessThan": "a14dbdf471001dd0601b0c491184990c178a199c", "status": "affected", "versionType": "git"}, {"version": "e49a51a96b531f1b4bcd8d358e645b6c74ef67e6", "lessThan": "d22ad96f1a0c89e0ba66a2facc7430f0923919e3", "status": "affected", "versionType": "git"}, {"version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "lessThan": "7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0", "status": "affected", "versionType": "git"}, {"version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "lessThan": "7ef12e1dd06e442eebf370f6e53c41bd056d0f22", "status": "affected", "versionType": "git"}, {"version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "lessThan": "6ecf17bf5fe8da51a6e3fc9e03a76898fcc5c6cf", "status": "affected", "versionType": "git"}, {"version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "lessThan": "74be657d98a8d684c0475f3cbd450ef2a30ffc73", "status": "affected", "versionType": "git"}, {"version": "204beeb509d37669de34560e83bb8abffe7ee63a", "status": "affected", "versionType": "git"}, {"version": "b24cf43d9babf1265a2bb0ae8d198267cef43b83", "status": "affected", "versionType": "git"}, {"version": "5.10.201", "lessThan": "5.10.270", "status": "affected", "versionType": "semver"}, {"version": "5.15.139", "lessThan": "5.15.221", "status": "affected", "versionType": "semver"}, {"version": "6.1.63", "lessThan": "6.1.188", "status": "affected", "versionType": "semver"}, {"version": "6.6.2", "lessThan": "6.6.157", "status": "affected", "versionType": "semver"}, {"version": "5.4.261", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "6.5.12", "lessThan": "6.6", "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/i3c/master.c"], "versions": [{"version": "6.7", "status": "affected"}, {"version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "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": "5.10.201", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.139", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.63", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.2", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.5.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5bf498623f8397d45f85f14cd631c5e5a565c2fb"}, {"url": "https://git.kernel.org/stable/c/20a2b6df91fd782ef2ff551febef594d0b46a9a7"}, {"url": "https://git.kernel.org/stable/c/a14dbdf471001dd0601b0c491184990c178a199c"}, {"url": "https://git.kernel.org/stable/c/d22ad96f1a0c89e0ba66a2facc7430f0923919e3"}, {"url": "https://git.kernel.org/stable/c/7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0"}, {"url": "https://git.kernel.org/stable/c/7ef12e1dd06e442eebf370f6e53c41bd056d0f22"}, {"url": "https://git.kernel.org/stable/c/6ecf17bf5fe8da51a6e3fc9e03a76898fcc5c6cf"}, {"url": "https://git.kernel.org/stable/c/74be657d98a8d684c0475f3cbd450ef2a30ffc73"}], "title": "i3c: master: Fix device_register() error path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/i3c/master.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5bf498623f8397d45f85f14cd631c5e5a565c2fb", "status": "affected", "version": "1832ed55df45f4145335ad992fb83813cdc58b5d", "versionType": "git"}, {"lessThan": "20a2b6df91fd782ef2ff551febef594d0b46a9a7", "status": "affected", "version": "d48fe8d98171e0fffdeaa8b37ce0a6444bff819b", "versionType": "git"}, {"lessThan": "a14dbdf471001dd0601b0c491184990c178a199c", "status": "affected", "version": "174ae0a3b89e7804e4ea3d31bd83d6e43f39568c", "versionType": "git"}, {"lessThan": "d22ad96f1a0c89e0ba66a2facc7430f0923919e3", "status": "affected", "version": "e49a51a96b531f1b4bcd8d358e645b6c74ef67e6", "versionType": "git"}, {"lessThan": "7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0", "status": "affected", "version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "versionType": "git"}, {"lessThan": "7ef12e1dd06e442eebf370f6e53c41bd056d0f22", "status": "affected", "version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "versionType": "git"}, {"lessThan": "6ecf17bf5fe8da51a6e3fc9e03a76898fcc5c6cf", "status": "affected", "version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "versionType": "git"}, {"lessThan": "74be657d98a8d684c0475f3cbd450ef2a30ffc73", "status": "affected", "version": "cab63f64887616e3c4e31cfd8103320be6ebc8d3", "versionType": "git"}, {"status": "affected", "version": "204beeb509d37669de34560e83bb8abffe7ee63a", "versionType": "git"}, {"status": "affected", "version": "b24cf43d9babf1265a2bb0ae8d198267cef43b83", "versionType": "git"}, {"lessThan": "5.10.270", "status": "affected", "version": "5.10.201", "versionType": "semver"}, {"lessThan": "5.15.221", "status": "affected", "version": "5.15.139", "versionType": "semver"}, {"lessThan": "6.1.188", "status": "affected", "version": "6.1.63", "versionType": "semver"}, {"lessThan": "6.6.157", "status": "affected", "version": "6.6.2", "versionType": "semver"}, {"lessThan": "5.5", "status": "affected", "version": "5.4.261", "versionType": "semver"}, {"lessThan": "6.6", "status": "affected", "version": "6.5.12", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/i3c/master.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.7"}, {"lessThan": "6.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "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\ni3c: master: Fix device_register() error path\n\nWhen device_register() fails in i3c_master_register_new_i3c_devs(),\nput_device() is called to drop the reference taken by\ndevice_register(). That drops the last reference, so the device's\nrelease callback i3c_device_release() runs and frees the i3c_device.\n\nTwo problems follow from that:\n\ni3c_device_release() does WARN_ON(i3cdev->desc), so it warns because\ndesc->dev->desc still points back at the descriptor. Clear it before\ncalling put_device().\n\nAfter put_device() frees the i3c_device, desc->dev is left pointing at\nfreed memory, so clear desc->dev as well. That prevents, for example,\ni3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and\ndereferencing it."}], "id": "CVE-2026-93283", "lastModified": "2026-10-19T10:17:19.927", "metrics": {}, "published": "2026-09-24T16:17:25.690", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/20a2b6df91fd782ef2ff551febef594d0b46a9a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5bf498623f8397d45f85f14cd631c5e5a565c2fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6ecf17bf5fe8da51a6e3fc9e03a76898fcc5c6cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/74be657d98a8d684c0475f3cbd450ef2a30ffc73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ef12e1dd06e442eebf370f6e53c41bd056d0f22"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a14dbdf471001dd0601b0c491184990c178a199c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d22ad96f1a0c89e0ba66a2facc7430f0923919e3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: i3c: master: Fix device_register() error path", "id": "2540337", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540337"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ni3c: master: Fix device_register() error path\nWhen device_register() fails in i3c_master_register_new_i3c_devs(),\nput_device() is called to drop the reference taken by\ndevice_register(). That drops the last reference, so the device's\nrelease callback i3c_device_release() runs and frees the i3c_device.\nTwo problems follow from that:\ni3c_device_release() does WARN_ON(i3cdev->desc), so it warns because\ndesc->dev->desc still points back at the descriptor. Clear it before\ncalling put_device().\nAfter put_device() frees the i3c_device, desc->dev is left pointing at\nfreed memory, so clear desc->dev as well. That prevents, for example,\ni3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and\ndereferencing it.", "A flaw was found in the Linux kernel's I3C (Improved Inter-Integrated Circuit) master subsystem. This issue can result in a Denial of Service (DoS) caused by a system crash. When device registration fails, the driver frees the device object but fails to clear internal pointers referencing the freed memory. A local user could exploit this dangling reference during subsequent device unregistration to trigger a use-after-free condition."], "name": "CVE-2026-93283", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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-2026-93283\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-93283\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93283.mbox"], "threat_severity": "Moderate"}

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