{"id":"CVE-2026-93068","revision":"ba3539ad5c3241678f65bd7cc498727d","records":[{"revision":"ba3539ad5c3241678f65bd7cc498727d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93068","aliases":[],"title":"drm/amd/display: Fix DM I2C teardown race","description":"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","state":0,"publishedAt":"2026-09-17T16:10:52.971+00:00","modifiedAt":"2026-10-19T09:05:04.158+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c\",\n                        \"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3\",\n                            \"lessThan\": \"8ee385305e8902fa6fbfd66b5a112238292567b6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3\",\n                            \"lessThan\": \"6970ec944567f109ac4240f9aea58158ee8a18cd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3\",\n                            \"lessThan\": \"e4ae30a12aa95942814957d8bc1ce7366a7107d7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c\",\n                        \"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/8ee385305e8902fa6fbfd66b5a112238292567b6","https://git.kernel.org/stable/c/6970ec944567f109ac4240f9aea58158ee8a18cd","https://git.kernel.org/stable/c/e4ae30a12aa95942814957d8bc1ce7366a7107d7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93068","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93068","identifiers":["CVE-2026-93068"]},"retained":false,"historicalAffected":[]}],"coverage":[]}