drm/amd/display: Fix DM I2C teardown race
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix DM I2C teardown race DM I2C adapters can remain visible to userspace while DM teardown is already in progress. A concurrent i2c-dev transfer may then enter amdgpu_dm_i2c_xfer() after the backing DM state has been torn down, leading to a NULL pointer dereference. Create a devres group around the DM I2C adapter lifetime and release it at the start of dm_hw_fini(), before HPD, IRQ, and DM state are torn down. This removes the I2C adapters first and waits for in-flight users to drain before the structures used by amdgpu_dm_i2c_xfer() disappear. This fixes a teardown ordering race seen during device removal: BUG: kernel NULL pointer dereference RIP: amdgpu_dm_i2c_xfer+0x122/0x1c0 [amdgpu] Call Trace: __i2c_transfer i2c_transfer i2cdev_ioctl_rdwr
CVE-2026-93068
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93068
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3",
"lessThan": "8ee385305e8902fa6fbfd66b5a112238292567b6",
"versionType": "git"
},
{
"status": "affected",
"version": "5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3",
"lessThan": "6970ec944567f109ac4240f9aea58158ee8a18cd",
"versionType": "git"
},
{
"status": "affected",
"version": "5b3eca05cfb02ed0dbd7097c056fb08ce5f76fe3",
"lessThan": "e4ae30a12aa95942814957d8bc1ce7366a7107d7",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c",
"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c",
"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93068
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37804 · Revision 1
- Added to Heist Feed
- Publisher date