{"api_version":"1","generated_at":"2026-08-28T16:25:21+00:00","cve":"CVE-2026-80678","urls":{"html":"https://cve.report/CVE-2026-80678","api":"https://cve.report/api/cve/CVE-2026-80678.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80678","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80678"},"summary":{"title":"i2c: imx: Fix slave registration race and error handling","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: Fix slave registration race and error handling\n\nIn i2c_imx_reg_slave(), the slave pointer was assigned before\npm_runtime_resume_and_get().  If pm_runtime_resume_and_get() failed,\nthe error path returned without clearing i2c_imx->slave, leaving it\nnon-NULL and causing all subsequent registration attempts to fail\nwith -EBUSY.\n\nAdditionally, because this driver uses a shared IRQ, the interrupt\nhandler i2c_imx_isr() can execute concurrently and, after acquiring\nslave_lock, dereference i2c_imx->slave.  The previous fix attempt\nadded a lockless i2c_imx->slave = NULL on the error path, but that\ncould race with the ISR under the lock and still cause a NULL pointer\ndereference.\n\nFix both issues by deferring the assignment of i2c_imx->slave and\ni2c_imx->last_slave_event to after a successful resume, and by\nperforming the assignment inside the slave_lock critical section.\nThis guarantees that the slave pointer is never left stale on the\nerror path and is always valid when observed by the interrupt handler.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:53","updated_at":"2026-08-28 08:16:53"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8","name":"https://git.kernel.org/stable/c/b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cfdf6e13518589f911b7eace6ccb788e4ed87397","name":"https://git.kernel.org/stable/c/cfdf6e13518589f911b7eace6ccb788e4ed87397","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/754bc62f72fd64b202462367134ac8ce95b005de","name":"https://git.kernel.org/stable/c/754bc62f72fd64b202462367134ac8ce95b005de","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/614ca6594e301ff682999797c2216e9685558a2b","name":"https://git.kernel.org/stable/c/614ca6594e301ff682999797c2216e9685558a2b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/12a4f0950a158d98552cbaeacc35edccd8d975fa","name":"https://git.kernel.org/stable/c/12a4f0950a158d98552cbaeacc35edccd8d975fa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f","name":"https://git.kernel.org/stable/c/d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d64ec362c369bbc33833f7936d5f3a706b0d5c45","name":"https://git.kernel.org/stable/c/d64ec362c369bbc33833f7936d5f3a706b0d5c45","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80678","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80678","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7414cd6923fd7f78e57086fc964ba2dc25db5c1 754bc62f72fd64b202462367134ac8ce95b005de git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7414cd6923fd7f78e57086fc964ba2dc25db5c1 cfdf6e13518589f911b7eace6ccb788e4ed87397 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7414cd6923fd7f78e57086fc964ba2dc25db5c1 b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f7414cd6923fd7f78e57086fc964ba2dc25db5c1 d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/i2c/busses/i2c-imx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"754bc62f72fd64b202462367134ac8ce95b005de","status":"affected","version":"f7414cd6923fd7f78e57086fc964ba2dc25db5c1","versionType":"git"},{"lessThan":"cfdf6e13518589f911b7eace6ccb788e4ed87397","status":"affected","version":"f7414cd6923fd7f78e57086fc964ba2dc25db5c1","versionType":"git"},{"lessThan":"b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8","status":"affected","version":"f7414cd6923fd7f78e57086fc964ba2dc25db5c1","versionType":"git"},{"lessThan":"d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f","status":"affected","version":"f7414cd6923fd7f78e57086fc964ba2dc25db5c1","versionType":"git"},{"lessThan":"12a4f0950a158d98552cbaeacc35edccd8d975fa","status":"affected","version":"f7414cd6923fd7f78e57086fc964ba2dc25db5c1","versionType":"git"},{"lessThan":"614ca6594e301ff682999797c2216e9685558a2b","status":"affected","version":"f7414cd6923fd7f78e57086fc964ba2dc25db5c1","versionType":"git"},{"lessThan":"d64ec362c369bbc33833f7936d5f3a706b0d5c45","status":"affected","version":"f7414cd6923fd7f78e57086fc964ba2dc25db5c1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/i2c/busses/i2c-imx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.11"},{"lessThan":"5.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.217","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.217","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.183","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"5.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"5.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: Fix slave registration race and error handling\n\nIn i2c_imx_reg_slave(), the slave pointer was assigned before\npm_runtime_resume_and_get().  If pm_runtime_resume_and_get() failed,\nthe error path returned without clearing i2c_imx->slave, leaving it\nnon-NULL and causing all subsequent registration attempts to fail\nwith -EBUSY.\n\nAdditionally, because this driver uses a shared IRQ, the interrupt\nhandler i2c_imx_isr() can execute concurrently and, after acquiring\nslave_lock, dereference i2c_imx->slave.  The previous fix attempt\nadded a lockless i2c_imx->slave = NULL on the error path, but that\ncould race with the ISR under the lock and still cause a NULL pointer\ndereference.\n\nFix both issues by deferring the assignment of i2c_imx->slave and\ni2c_imx->last_slave_event to after a successful resume, and by\nperforming the assignment inside the slave_lock critical section.\nThis guarantees that the slave pointer is never left stale on the\nerror path and is always valid when observed by the interrupt handler."}],"providerMetadata":{"dateUpdated":"2026-08-28T06:52:47.077Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/754bc62f72fd64b202462367134ac8ce95b005de"},{"url":"https://git.kernel.org/stable/c/cfdf6e13518589f911b7eace6ccb788e4ed87397"},{"url":"https://git.kernel.org/stable/c/b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8"},{"url":"https://git.kernel.org/stable/c/d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f"},{"url":"https://git.kernel.org/stable/c/12a4f0950a158d98552cbaeacc35edccd8d975fa"},{"url":"https://git.kernel.org/stable/c/614ca6594e301ff682999797c2216e9685558a2b"},{"url":"https://git.kernel.org/stable/c/d64ec362c369bbc33833f7936d5f3a706b0d5c45"}],"title":"i2c: imx: Fix slave registration race and error handling","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80678","datePublished":"2026-08-28T06:52:47.077Z","dateReserved":"2026-08-26T14:34:25.783Z","dateUpdated":"2026-08-28T06:52:47.077Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-28 08:16:53","lastModifiedDate":"2026-08-28 08:16:53","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80678","Ordinal":"1","Title":"i2c: imx: Fix slave registration race and error handling","CVE":"CVE-2026-80678","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80678","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: imx: Fix slave registration race and error handling\n\nIn i2c_imx_reg_slave(), the slave pointer was assigned before\npm_runtime_resume_and_get().  If pm_runtime_resume_and_get() failed,\nthe error path returned without clearing i2c_imx->slave, leaving it\nnon-NULL and causing all subsequent registration attempts to fail\nwith -EBUSY.\n\nAdditionally, because this driver uses a shared IRQ, the interrupt\nhandler i2c_imx_isr() can execute concurrently and, after acquiring\nslave_lock, dereference i2c_imx->slave.  The previous fix attempt\nadded a lockless i2c_imx->slave = NULL on the error path, but that\ncould race with the ISR under the lock and still cause a NULL pointer\ndereference.\n\nFix both issues by deferring the assignment of i2c_imx->slave and\ni2c_imx->last_slave_event to after a successful resume, and by\nperforming the assignment inside the slave_lock critical section.\nThis guarantees that the slave pointer is never left stale on the\nerror path and is always valid when observed by the interrupt handler.","Type":"Description","Title":"i2c: imx: Fix slave registration race and error handling"}]}}}