{"id":"CVE-2026-93068","summary":"drm/amd/display: Fix DM I2C teardown race","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix DM I2C teardown race\n\nDM I2C adapters can remain visible to userspace while DM teardown is\nalready in progress. A concurrent i2c-dev transfer may then enter\namdgpu_dm_i2c_xfer() after the backing DM state has been torn down,\nleading to a NULL pointer dereference.\n\nCreate a devres group around the DM I2C adapter lifetime and release it\nat the start of dm_hw_fini(), before HPD, IRQ, and DM state are torn\ndown. This removes the I2C adapters first and waits for in-flight users\nto drain before the structures used by amdgpu_dm_i2c_xfer() disappear.\n\nThis fixes a teardown ordering race seen during device removal:\n\nBUG: kernel NULL pointer dereference\nRIP: amdgpu_dm_i2c_xfer+0x122/0x1c0 [amdgpu]\nCall Trace:\n__i2c_transfer\ni2c_transfer\ni2cdev_ioctl_rdwr","modified":"2026-09-18T03:48:43.807235050Z","published":"2026-09-17T16:10:52.971Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93068.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6970ec944567f109ac4240f9aea58158ee8a18cd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8ee385305e8902fa6fbfd66b5a112238292567b6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e4ae30a12aa95942814957d8bc1ce7366a7107d7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93068.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93068"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3"},{"fixed":"8ee385305e8902fa6fbfd66b5a112238292567b6"},{"fixed":"6970ec944567f109ac4240f9aea58158ee8a18cd"},{"fixed":"e4ae30a12aa95942814957d8bc1ce7366a7107d7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93068.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93068.json"}}],"schema_version":"1.9.0"}