{"id":"CVE-2026-46065","revision":"6fa97738a20247fb86a1b776ff996be0","records":[{"revision":"6fa97738a20247fb86a1b776ff996be0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46065","aliases":[],"title":"fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info\n\nHold state of deferred I/O in struct fb_deferred_io_state. Allocate an\ninstance as part of initializing deferred I/O and remove it only after\nthe final mapping has been closed. If the fb_info and the contained\ndeferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info\nto invalidate the mapping. Any access will then result in a SIGBUS\nsignal.\n\nFixes a long-standing problem, where a device hot-unplug happens while\nuser space still has an active mapping of the graphics memory. The hot-\nunplug frees the instance of struct fb_info. Accessing the memory will\noperate on undefined state.","state":0,"publishedAt":"2026-05-27T12:57:32.968+00:00","modifiedAt":"2026-10-19T19:26:42.635+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/video/fbdev/core/fb_defio.c\",\n                        \"include/linux/fb.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"60b59beafba875aef6d378078bce0baf2287ae14\",\n                            \"lessThan\": \"4aab89603b637a2e441b38808c4f6fe7d1184df6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"60b59beafba875aef6d378078bce0baf2287ae14\",\n                            \"lessThan\": \"4fda0d6b45faad44926dd3e4f55f118d899b2e27\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"60b59beafba875aef6d378078bce0baf2287ae14\",\n                            \"lessThan\": \"2a40f8bc9bb713329f1c35ffc199ee961a7135b0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"60b59beafba875aef6d378078bce0baf2287ae14\",\n                            \"lessThan\": \"2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"60b59beafba875aef6d378078bce0baf2287ae14\",\n                            \"lessThan\": \"25c2b77bc463f29ee71a54b883548baf9386a0db\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"60b59beafba875aef6d378078bce0baf2287ae14\",\n                            \"lessThan\": \"a0aafb421dd15e935d81543152617f2742cefa70\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"60b59beafba875aef6d378078bce0baf2287ae14\",\n                            \"lessThan\": \"9ded47ad003f09a94b6a710b5c47f4aa5ceb7429\",\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                        \"drivers/video/fbdev/core/fb_defio.c\",\n                        \"include/linux/fb.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.22\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.22\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.210\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.176\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.140\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.88\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.30\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.4\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\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/4aab89603b637a2e441b38808c4f6fe7d1184df6","https://git.kernel.org/stable/c/4fda0d6b45faad44926dd3e4f55f118d899b2e27","https://git.kernel.org/stable/c/2a40f8bc9bb713329f1c35ffc199ee961a7135b0","https://git.kernel.org/stable/c/2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066","https://git.kernel.org/stable/c/25c2b77bc463f29ee71a54b883548baf9386a0db","https://git.kernel.org/stable/c/a0aafb421dd15e935d81543152617f2742cefa70","https://git.kernel.org/stable/c/9ded47ad003f09a94b6a710b5c47f4aa5ceb7429"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46065","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46065","identifiers":["CVE-2026-46065"]},"retained":false,"historicalAffected":[]}],"coverage":[]}