{"id":"CVE-2026-90210","revision":"8e3e279f21694942969ef66fb23c8271","records":[{"revision":"8e3e279f21694942969ef66fb23c8271","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90210","aliases":[],"title":"bpf: Fix UAF in bpf_trampoline_multi_attach_free on update failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix UAF in bpf_trampoline_multi_attach_free on update failure\n\nWhen bpf_trampoline_update() fails before modify_fentry_multi()/\nunregister_fentry_multi() is called, cur_image is unchanged\n(cur_image == old_image) and ftrace still calls into it.  Freeing\nold_image in that case causes a UAF.\n\nOnly free old_image when it differs from cur_image.","state":0,"publishedAt":"2026-09-17T16:07:24.772+00:00","modifiedAt":"2026-10-19T08:59:46.406+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                        \"kernel/bpf/trampoline.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"aef4dfa790b22d8052cfb78044eadbe03c876c39\",\n                            \"lessThan\": \"65c3939656fd7848e9274faa07c26748b5bf049c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"aef4dfa790b22d8052cfb78044eadbe03c876c39\",\n                            \"lessThan\": \"0253073fb7d79a2dd2eae9581ea16db2aef395a6\",\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                        \"kernel/bpf/trampoline.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"7.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\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/65c3939656fd7848e9274faa07c26748b5bf049c","https://git.kernel.org/stable/c/0253073fb7d79a2dd2eae9581ea16db2aef395a6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90210","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90210","identifiers":["CVE-2026-90210"]},"retained":false,"historicalAffected":[]}],"coverage":[]}