{"id":"CVE-2026-80678","title":"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()","summary":"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_resu…","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-476"],"vendor":"Linux","product":"Linux","affected":["Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < 754bc62f72fd64b202462367134ac8ce95b005de","Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < cfdf6e13518589f911b7eace6ccb788e4ed87397","Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8","Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f","Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < 12a4f0950a158d98552cbaeacc35edccd8d975fa","Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < 614ca6594e301ff682999797c2216e9685558a2b","Linux >= f7414cd6923fd7f78e57086fc964ba2dc25db5c1 < d64ec362c369bbc33833f7936d5f3a706b0d5c45","Linux 5.11"],"published":"2026-08-28","updated":"2026-10-16","sourceUpdated":"2026-10-16T20:18:05.967","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80678","references":[{"url":"https://git.kernel.org/stable/c/12a4f0950a158d98552cbaeacc35edccd8d975fa","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/614ca6594e301ff682999797c2216e9685558a2b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/754bc62f72fd64b202462367134ac8ce95b005de","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b9f6f4883b9ac86654e75899d0dbf8a7a96ad5d8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cfdf6e13518589f911b7eace6ccb788e4ed87397","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d64ec362c369bbc33833f7936d5f3a706b0d5c45","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d6748f6802f3eebafaa16a5e5dcfbfb9b3bc173f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80678.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80678"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2525505"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80678"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80678"},{"url":"https://kernelcve.org/list/?q=CVE-2026-80678"},{"url":"https://lore.kernel.org/linux-cve-announce/2026082800-CVE-2026-80678-ddd4@gregkh/T"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00142,"epssPercentile":0.03453,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:19:46.218826Z"},"scores":{"nvd":8.4,"vendor":4.7},"ingestedAt":"2026-08-30T04:47:10.331Z","slug":"CVE-2026-80678","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80678.json)","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}