CVE-2026-63906

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63906", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.020Z", "datePublished": "2026-07-19T14:55:12.982Z", "dateUpdated": "2026-08-05T12:37:01.876Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:37:01.876Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: musb: omap2430: Fix use-after-free in omap2430_probe()\n\nIn omap2430_probe(), of_node_put(np) is called prematurely before the\nlast access to np, leading to a use-after-free if the node's reference\ncount drops to zero. Move the of_node_put() calls after the last use of\nnp in both the success and error paths."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The UAF is reached only through local kernel driver probing (boot-time platform device enumeration, module load, or sysfs bind), not via network or USB packet handling. This is the highest defensible attack vector for this platform-driver probe bug.\nAC:L - Once probe runs on affected OMAP hardware, the premature of_node_put() deterministically frees the device_node before subsequent property/IRQ reads on the same pointer, with no race or attacker-uncontrollable timing required.\nPR:N - On OMAP3/OMAP4 systems with the driver built-in, the vulnerable probe path executes automatically at every boot without any software privileges; an attacker only needs the ability to power-cycle or reboot the device (e.g., a public OMAP kiosk or embedded controller).\nUI:N - Exploitation requires no victim interaction such as opening files or plugging in USB devices; the bug fires during kernel driver initialization on affected hardware.\nS:U - Impact is confined to kernel memory corruption and privilege boundaries within the host kernel; OMAP MUSB is an embedded SoC USB controller, not a hypervisor or cross-VM boundary.\nC:H - The use-after-free on a freed device_node structure allows reads of reallocated slab memory through of_property_read_u32() and of_parse_phandle(), enabling kernel information disclosure.\nI:H - UAF on the device_node heap object can corrupt kernel metadata and be leveraged for controlled writes or code execution through heap grooming during probe.\nA:H - Reading freed device_node memory during probe can cause kernel oops/panic and brick boot on OMAP systems, making the device unavailable until power-cycled or reflashed."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/musb/omap2430.c"], "versions": [{"version": "22b60658a90260e3fbd57824e3afe5682c6afcf5", "lessThan": "632fd888fe33083927e29ef651ac1aba345edd9e", "status": "affected", "versionType": "git"}, {"version": "ffbe2feac59b37c8dc536727552b4f375e1b9aec", "lessThan": "b987f380620b38c84f054d5ff5c05861a7c2203b", "status": "affected", "versionType": "git"}, {"version": "ffbe2feac59b37c8dc536727552b4f375e1b9aec", "lessThan": "27e62532228dc42367bb43ebbcd7bf49d8db2b0d", "status": "affected", "versionType": "git"}, {"version": "ffbe2feac59b37c8dc536727552b4f375e1b9aec", "lessThan": "69f9f2b30af03d9b6e83f78fb0f734b6066d4678", "status": "affected", "versionType": "git"}, {"version": "ffbe2feac59b37c8dc536727552b4f375e1b9aec", "lessThan": "d53e4c41331f57b9fd78cbf3e480c6ce20aea07b", "status": "affected", "versionType": "git"}, {"version": "ffbe2feac59b37c8dc536727552b4f375e1b9aec", "lessThan": "e194ce048f5a6c549b3a23a8c568c6470f40f772", "status": "affected", "versionType": "git"}, {"version": "fed43efc00ba6ac8c6b95828cd5acfa3d45eca4d", "status": "affected", "versionType": "git"}, {"version": "6.1.2", "lessThan": "6.1.176", "status": "affected", "versionType": "semver"}, {"version": "6.0.16", "lessThan": "6.1", "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/usb/musb/omap2430.c"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "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": "6.1.2", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/632fd888fe33083927e29ef651ac1aba345edd9e"}, {"url": "https://git.kernel.org/stable/c/b987f380620b38c84f054d5ff5c05861a7c2203b"}, {"url": "https://git.kernel.org/stable/c/27e62532228dc42367bb43ebbcd7bf49d8db2b0d"}, {"url": "https://git.kernel.org/stable/c/69f9f2b30af03d9b6e83f78fb0f734b6066d4678"}, {"url": "https://git.kernel.org/stable/c/d53e4c41331f57b9fd78cbf3e480c6ce20aea07b"}, {"url": "https://git.kernel.org/stable/c/e194ce048f5a6c549b3a23a8c568c6470f40f772"}], "title": "usb: musb: omap2430: Fix use-after-free in omap2430_probe()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

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Move the of_node_put() calls after the last use of\nnp in both the success and error paths."}], "id": "CVE-2026-63906", "lastModified": "2026-10-30T14:37:24.840", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-07-19T16:17:08.400", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/27e62532228dc42367bb43ebbcd7bf49d8db2b0d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/632fd888fe33083927e29ef651ac1aba345edd9e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/69f9f2b30af03d9b6e83f78fb0f734b6066d4678"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b987f380620b38c84f054d5ff5c05861a7c2203b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d53e4c41331f57b9fd78cbf3e480c6ce20aea07b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e194ce048f5a6c549b3a23a8c568c6470f40f772"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usb: musb: omap2430: Fix use-after-free in omap2430_probe()", "id": "2502322", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502322"}, "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-825", "details": ["A flaw was found in the Linux kernel's USB subsystem. Specifically, within the omap2430 driver, a memory resource is prematurely released while still in use, leading to a use-after-free vulnerability. This could allow a local attacker to cause a system crash (denial of service) or potentially execute arbitrary code with elevated privileges."], "name": "CVE-2026-63906", "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:hummingbird:1", "fix_state": "Not affected", "impact": "important", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63906\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63906\nhttps://lore.kernel.org/linux-cve-announce/2026071945-CVE-2026-63906-eb79@gregkh/T"], "threat_severity": "Moderate"}

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