{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89733", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.760Z", "datePublished": "2026-09-11T19:46:42.613Z", "dateUpdated": "2026-09-11T19:46:42.613Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:46:42.613Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()\n\nIn uvc_function_bind() error path, we use usb_ep_free_request which\nuses uvc->control_req but does not set it to NULL afterwards. Thus,\nuvc->control_req is a dangling pointer causing a UAF. Also we do not set\nthe uvc->control_buf pointer to NULL after freeing it, which is another\ndangling pointer. Fix it by setting uvc->control_req to NULL after we run\nusb_ep_free_request() and uvc->control_buf to NULL after kfree. Do the\nsame for uvc_function_unbind()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_uvc.c"], "versions": [{"version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "lessThan": "8e88ed8a374de67270d38689f2a81018909cafbb", "status": "affected", "versionType": "git"}, {"version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "lessThan": "9897b7da8c0ad8356c1b8649379fcb5a689462cb", "status": "affected", "versionType": "git"}, {"version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "lessThan": "38f822ddce9355893d734279a26ddec45182197e", "status": "affected", "versionType": "git"}, {"version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "lessThan": "bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc", "status": "affected", "versionType": "git"}, {"version": "1efa8a5aac93d9e67075995d7d4902b57ce184f7", "status": "affected", "versionType": "git"}, {"version": "e7a4b0efe62e56a0acc81d16091c6efc2a282be8", "status": "affected", "versionType": "git"}, {"version": "065f5561a20659cf17aae5f72b32b5c2695c8e00", "status": "affected", "versionType": "git"}, {"version": "3.2.36", "lessThan": "3.3", "status": "affected", "versionType": "semver"}, {"version": "3.4.25", "lessThan": "3.5", "status": "affected", "versionType": "semver"}, {"version": "3.7.2", "lessThan": "3.8", "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/gadget/function/f_uvc.c"], "versions": [{"version": "3.8", "status": "affected"}, {"version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "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": "3.8", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "7.3-rc1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4.25"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8e88ed8a374de67270d38689f2a81018909cafbb"}, {"url": "https://git.kernel.org/stable/c/9897b7da8c0ad8356c1b8649379fcb5a689462cb"}, {"url": "https://git.kernel.org/stable/c/38f822ddce9355893d734279a26ddec45182197e"}, {"url": "https://git.kernel.org/stable/c/bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc"}], "title": "usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/f_uvc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8e88ed8a374de67270d38689f2a81018909cafbb", "status": "affected", "version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "versionType": "git"}, {"lessThan": "9897b7da8c0ad8356c1b8649379fcb5a689462cb", "status": "affected", "version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "versionType": "git"}, {"lessThan": "38f822ddce9355893d734279a26ddec45182197e", "status": "affected", "version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "versionType": "git"}, {"lessThan": "bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc", "status": "affected", "version": "0f9df939385527049c8062a099fbfa1479fe7ce0", "versionType": "git"}, {"status": "affected", "version": "1efa8a5aac93d9e67075995d7d4902b57ce184f7", "versionType": "git"}, {"status": "affected", "version": "e7a4b0efe62e56a0acc81d16091c6efc2a282be8", "versionType": "git"}, {"status": "affected", "version": "065f5561a20659cf17aae5f72b32b5c2695c8e00", "versionType": "git"}, {"lessThan": "3.3", "status": "affected", "version": "3.2.36", "versionType": "semver"}, {"lessThan": "3.5", "status": "affected", "version": "3.4.25", "versionType": "semver"}, {"lessThan": "3.8", "status": "affected", "version": "3.7.2", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/f_uvc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.8"}, {"lessThan": "3.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "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\nusb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()\n\nIn uvc_function_bind() error path, we use usb_ep_free_request which\nuses uvc->control_req but does not set it to NULL afterwards. Thus,\nuvc->control_req is a dangling pointer causing a UAF. Also we do not set\nthe uvc->control_buf pointer to NULL after freeing it, which is another\ndangling pointer. Fix it by setting uvc->control_req to NULL after we run\nusb_ep_free_request() and uvc->control_buf to NULL after kfree. Do the\nsame for uvc_function_unbind()."}], "id": "CVE-2026-89733", "lastModified": "2026-09-11T20:20:03.730", "metrics": {}, "published": "2026-09-11T20:20:03.730", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/38f822ddce9355893d734279a26ddec45182197e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8e88ed8a374de67270d38689f2a81018909cafbb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9897b7da8c0ad8356c1b8649379fcb5a689462cb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: USB UVC gadget driver use-after-free vulnerability", "id": "2532203", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532203"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.6", "cvss3_scoring_vector": "CVSS:3.1/AV:P/AC:L/PR:N/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 Video Class (UVC) gadget driver. This vulnerability occurs in the `uvc_function_bind()` and `uvc_function_unbind()` functions, where pointers to freed memory are not properly cleared. This can lead to a use-after-free (UAF) condition, potentially allowing an attacker to corrupt memory, which may result in a denial of service or arbitrary code execution."], "name": "CVE-2026-89733", "public_date": "2026-09-11T19:46:42Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89733\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89733\nhttps://git.kernel.org/stable/c/38f822ddce9355893d734279a26ddec45182197e\nhttps://git.kernel.org/stable/c/8e88ed8a374de67270d38689f2a81018909cafbb\nhttps://git.kernel.org/stable/c/9897b7da8c0ad8356c1b8649379fcb5a689462cb\nhttps://git.kernel.org/stable/c/bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc"], "threat_severity": "Moderate"}

{}