{"id":"CVE-2026-98218","revision":"3caeba7062744b038ff501e01edb092d","records":[{"revision":"3caeba7062744b038ff501e01edb092d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98218","aliases":[],"title":"i2c: atr: fix dangling adapter pointer on add failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: atr: fix dangling adapter pointer on add failure\n\ni2c_atr_add_adapter() stores atr->adapter[chan_id] before\ni2c_add_adapter() so that the I2C bus notifier can match child clients\nduring registration. On failure the channel is freed but the slot was\nleft pointing at freed memory, which can lead to use-after-free in\ni2c_atr_del_adapter() / cleanup and also block reuse with -EEXIST.\n\nClear the slot on the i2c_add_adapter() error path before freeing chan.","state":0,"publishedAt":"2026-10-06T08:44:54.034+00:00","modifiedAt":"2026-10-19T09:15:49.004+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/i2c/i2c-atr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a076a860acae77bbdcbd316541e5552e81fb1772\",\n                            \"lessThan\": \"2f5e42edbd232bf705dc5d3a91e06344237e63bb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a076a860acae77bbdcbd316541e5552e81fb1772\",\n                            \"lessThan\": \"1093835f6aef58a831298d93e0d93f244fa07b84\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a076a860acae77bbdcbd316541e5552e81fb1772\",\n                            \"lessThan\": \"eabf7a3d33cd9fad106d267d00cc842434de8e02\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a076a860acae77bbdcbd316541e5552e81fb1772\",\n                            \"lessThan\": \"a57d9592714506556e30188af72dd3bdb9f647b5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a076a860acae77bbdcbd316541e5552e81fb1772\",\n                            \"lessThan\": \"ad34235808b63a70ca4989b7a2852923193d06ef\",\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/i2c/i2c-atr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\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":[],"references":["https://git.kernel.org/stable/c/2f5e42edbd232bf705dc5d3a91e06344237e63bb","https://git.kernel.org/stable/c/1093835f6aef58a831298d93e0d93f244fa07b84","https://git.kernel.org/stable/c/eabf7a3d33cd9fad106d267d00cc842434de8e02","https://git.kernel.org/stable/c/a57d9592714506556e30188af72dd3bdb9f647b5","https://git.kernel.org/stable/c/ad34235808b63a70ca4989b7a2852923193d06ef"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98218","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98218","identifiers":["CVE-2026-98218"]},"retained":false,"historicalAffected":[]}],"coverage":[]}