{"id":"CVE-2026-89733","revision":"291fd29e874e4efbb71b6064ce1d3c0a","records":[{"revision":"291fd29e874e4efbb71b6064ce1d3c0a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89733","aliases":[],"title":"usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()","description":"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().","state":0,"publishedAt":"2026-09-11T19:46:42.613+00:00","modifiedAt":"2026-10-19T08:51:46.538+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/gadget/function/f_uvc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"85dd5e8bd6776d02854f2847d83429f1f712e99c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"502a7f5b79b7ba751988789e982924f8f496129f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"bec7708eb3b5295d12e931db24381b7c94c72953\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"8e88ed8a374de67270d38689f2a81018909cafbb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"9897b7da8c0ad8356c1b8649379fcb5a689462cb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"38f822ddce9355893d734279a26ddec45182197e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"0f9df939385527049c8062a099fbfa1479fe7ce0\",\n                            \"lessThan\": \"bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1efa8a5aac93d9e67075995d7d4902b57ce184f7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e7a4b0efe62e56a0acc81d16091c6efc2a282be8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"065f5561a20659cf17aae5f72b32b5c2695c8e00\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3.2.36\",\n                            \"lessThan\": \"3.3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"3.4.25\",\n                            \"lessThan\": \"3.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"3.7.2\",\n                            \"lessThan\": \"3.8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/usb/gadget/function/f_uvc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2","https://git.kernel.org/stable/c/85dd5e8bd6776d02854f2847d83429f1f712e99c","https://git.kernel.org/stable/c/502a7f5b79b7ba751988789e982924f8f496129f","https://git.kernel.org/stable/c/bec7708eb3b5295d12e931db24381b7c94c72953","https://git.kernel.org/stable/c/8e88ed8a374de67270d38689f2a81018909cafbb","https://git.kernel.org/stable/c/9897b7da8c0ad8356c1b8649379fcb5a689462cb","https://git.kernel.org/stable/c/38f822ddce9355893d734279a26ddec45182197e","https://git.kernel.org/stable/c/bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89733","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89733","identifiers":["CVE-2026-89733"]},"retained":false,"historicalAffected":[]}],"coverage":[]}