{ "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" } } } }