{"id":"CVE-2026-89982","state":"PUBLISHED","title":"i2c: mux: Fix channel node leak on adapter add failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: mux: Fix channel node leak on adapter add failure\n\ni2c_mux_add_adapter() takes a reference to the Device Tree channel node\nbefore registering the new adapter. If adapter registration fails, the\nerror path frees the private data without dropping that reference.\n\nRelease the channel node before freeing the private data.","publishedAt":"2026-09-16T10:32:58.747Z","updatedAt":"2026-10-19T08:55:56.803Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"4f42f70afd2447f3c82ca69d1e03466a75348ba9","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"4c9bc46a2a4afb7a11c48d33bdf19febab431015","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"0927153f2abf48b6cc3e5f27063a17f7a8d47f38","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"b580f062b24c4eef562f08f210c028adb34ef14e","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"694e7e6edf249723ca7d3ef77c2ca1badfc78dc4","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"385c7af4e3b95d0769fd211831674e83b16a2ebf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/i2c-mux.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.5","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/i2c-mux.c"]}],"references":["https://git.kernel.org/stable/c/4f42f70afd2447f3c82ca69d1e03466a75348ba9","https://git.kernel.org/stable/c/4c9bc46a2a4afb7a11c48d33bdf19febab431015","https://git.kernel.org/stable/c/dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1","https://git.kernel.org/stable/c/0927153f2abf48b6cc3e5f27063a17f7a8d47f38","https://git.kernel.org/stable/c/b580f062b24c4eef562f08f210c028adb34ef14e","https://git.kernel.org/stable/c/2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5","https://git.kernel.org/stable/c/694e7e6edf249723ca7d3ef77c2ca1badfc78dc4","https://git.kernel.org/stable/c/385c7af4e3b95d0769fd211831674e83b16a2ebf"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89982.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89982","state":"PUBLISHED","datePublished":"2026-09-16T10:32:58.747Z","dateUpdated":"2026-10-19T08:55:56.803Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.779Z"},"containers":{"cna":{"title":"i2c: mux: Fix channel node leak on adapter add failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: mux: Fix channel node leak on adapter add failure\n\ni2c_mux_add_adapter() takes a reference to the Device Tree channel node\nbefore registering the new adapter. If adapter registration fails, the\nerror path frees the private data without dropping that reference.\n\nRelease the channel node before freeing the private data."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"4f42f70afd2447f3c82ca69d1e03466a75348ba9","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"4c9bc46a2a4afb7a11c48d33bdf19febab431015","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"0927153f2abf48b6cc3e5f27063a17f7a8d47f38","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"b580f062b24c4eef562f08f210c028adb34ef14e","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"694e7e6edf249723ca7d3ef77c2ca1badfc78dc4","versionType":"git"},{"version":"bc45449b1444611d68466ae7f45f235420d79019","status":"affected","lessThan":"385c7af4e3b95d0769fd211831674e83b16a2ebf","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/i2c-mux.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.5","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i2c/i2c-mux.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4f42f70afd2447f3c82ca69d1e03466a75348ba9"},{"url":"https://git.kernel.org/stable/c/4c9bc46a2a4afb7a11c48d33bdf19febab431015"},{"url":"https://git.kernel.org/stable/c/dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1"},{"url":"https://git.kernel.org/stable/c/0927153f2abf48b6cc3e5f27063a17f7a8d47f38"},{"url":"https://git.kernel.org/stable/c/b580f062b24c4eef562f08f210c028adb34ef14e"},{"url":"https://git.kernel.org/stable/c/2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5"},{"url":"https://git.kernel.org/stable/c/694e7e6edf249723ca7d3ef77c2ca1badfc78dc4"},{"url":"https://git.kernel.org/stable/c/385c7af4e3b95d0769fd211831674e83b16a2ebf"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:55:56.803Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}