{"id":"CVE-2026-74736","revision":"67f498be2a794a8e8ea7cc61ac2d4747","records":[{"revision":"67f498be2a794a8e8ea7cc61ac2d4747","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74736","aliases":[],"title":"net/sched: cls_bpf: reject dev-bound programs bound to a different device","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cls_bpf: reject dev-bound programs bound to a different device\n\ncls_bpf_prog_from_efd() obtained a SCHED_CLS program via\nbpf_prog_get_type_dev() but never verified that a device-bound (offloaded)\nprogram's bound netdev matches the TC netdev the classifier is being\nattached to. This let a program loaded with prog_ifindex for device A be\nattached via cls_bpf + skip_sw to device B; deleting device A then\ndestroyed the program's offload state while it was still attached to\ndevice B, triggering a netdevsim WARN (panic with panic_on_warn=1).\n\nMirror the XDP attach path (net/core/dev.c) and reject the attach with\n-EINVAL when a dev-bound program's bound device does not match the\ntarget device.","state":0,"publishedAt":"2026-08-26T14:36:49.95+00:00","modifiedAt":"2026-10-16T19:16:12.701+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                        \"net/sched/cls_bpf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2b3486bc2d237ec345b3942b7be5deabf8c8fed1\",\n                            \"lessThan\": \"ec5a552f4b2d841c6c021752450716e1a9676661\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2b3486bc2d237ec345b3942b7be5deabf8c8fed1\",\n                            \"lessThan\": \"daf546ab5763ce6a18280cb4db060e836c515301\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2b3486bc2d237ec345b3942b7be5deabf8c8fed1\",\n                            \"lessThan\": \"adb3e7c26a51a10d94a241c6de7a81a2863dcacf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2b3486bc2d237ec345b3942b7be5deabf8c8fed1\",\n                            \"lessThan\": \"5685bbbd3cbfbeb0de96a1d275a5ca073dfebb5e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"2b3486bc2d237ec345b3942b7be5deabf8c8fed1\",\n                            \"lessThan\": \"120977e2c096deea4e866e4273be9220b957c29e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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                        \"net/sched/cls_bpf.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.153\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.105\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.46\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.10\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\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/ec5a552f4b2d841c6c021752450716e1a9676661","https://git.kernel.org/stable/c/daf546ab5763ce6a18280cb4db060e836c515301","https://git.kernel.org/stable/c/adb3e7c26a51a10d94a241c6de7a81a2863dcacf","https://git.kernel.org/stable/c/5685bbbd3cbfbeb0de96a1d275a5ca073dfebb5e","https://git.kernel.org/stable/c/120977e2c096deea4e866e4273be9220b957c29e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74736","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74736","identifiers":["CVE-2026-74736"]},"retained":false,"historicalAffected":[]}],"coverage":[]}