{"api_version":"1","generated_at":"2026-09-18T01:06:17+00:00","cve":"CVE-2026-93068","urls":{"html":"https://cve.report/CVE-2026-93068","api":"https://cve.report/api/cve/CVE-2026-93068.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93068","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93068"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:00","updated_at":"2026-09-17 17:18:00"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6970ec944567f109ac4240f9aea58158ee8a18cd","name":"https://git.kernel.org/stable/c/6970ec944567f109ac4240f9aea58158ee8a18cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e4ae30a12aa95942814957d8bc1ce7366a7107d7","name":"https://git.kernel.org/stable/c/e4ae30a12aa95942814957d8bc1ce7366a7107d7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8ee385305e8902fa6fbfd66b5a112238292567b6","name":"https://git.kernel.org/stable/c/8ee385305e8902fa6fbfd66b5a112238292567b6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93068","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93068","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 8ee385305e8902fa6fbfd66b5a112238292567b6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 6970ec944567f109ac4240f9aea58158ee8a18cd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3 e4ae30a12aa95942814957d8bc1ce7366a7107d7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c","drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8ee385305e8902fa6fbfd66b5a112238292567b6","status":"affected","version":"5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3","versionType":"git"},{"lessThan":"6970ec944567f109ac4240f9aea58158ee8a18cd","status":"affected","version":"5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3","versionType":"git"},{"lessThan":"e4ae30a12aa95942814957d8bc1ce7366a7107d7","status":"affected","version":"5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c","drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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"}],"providerMetadata":{"dateUpdated":"2026-09-17T16:10:52.971Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8ee385305e8902fa6fbfd66b5a112238292567b6"},{"url":"https://git.kernel.org/stable/c/6970ec944567f109ac4240f9aea58158ee8a18cd"},{"url":"https://git.kernel.org/stable/c/e4ae30a12aa95942814957d8bc1ce7366a7107d7"}],"title":"drm/amd/display: Fix DM I2C teardown race","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93068","datePublished":"2026-09-17T16:10:52.971Z","dateReserved":"2026-09-17T15:57:05.660Z","dateUpdated":"2026-09-17T16:10:52.971Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:00","lastModifiedDate":"2026-09-17 17:18:00","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93068","Ordinal":"1","Title":"drm/amd/display: Fix DM I2C teardown race","CVE":"CVE-2026-93068","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93068","Ordinal":"1","NoteData":"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","Type":"Description","Title":"drm/amd/display: Fix DM I2C teardown race"}]}}}