{"id":"CVE-2026-98218","title":"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 matc…","summary":"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 matc…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 < 2f5e42edbd232bf705dc5d3a91e06344237e63bb","Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 < 1093835f6aef58a831298d93e0d93f244fa07b84","Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 < eabf7a3d33cd9fad106d267d00cc842434de8e02","Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 < a57d9592714506556e30188af72dd3bdb9f647b5","Linux >= a076a860acae77bbdcbd316541e5552e81fb1772 < ad34235808b63a70ca4989b7a2852923193d06ef","Linux 6.6"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:08.590","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98218","references":[{"url":"https://git.kernel.org/stable/c/1093835f6aef58a831298d93e0d93f244fa07b84","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2f5e42edbd232bf705dc5d3a91e06344237e63bb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a57d9592714506556e30188af72dd3bdb9f647b5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ad34235808b63a70ca4989b7a2852923193d06ef","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eabf7a3d33cd9fad106d267d00cc842434de8e02","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.440Z","slug":"CVE-2026-98218","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}