drm/amd/pm: Disable MMIO access during SMU Mode 1 reset
In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: Disable MMIO access during SMU Mode 1 reset During Mode 1 reset, the ASIC undergoes a reset cycle and becomes temporarily inaccessible via PCIe. Any attempt to access MMIO registers during this window (e.g., from interrupt handlers or other driver threads) can result in uncompleted PCIe transactions, leading to NMI panics or system hangs. To prevent this, set the `no_hw_access` flag to true immediately after triggering the reset. This signals other driver components to skip register accesses while the device is offline. A memory barrier `smp_mb()` is added to ensure the flag update is globally visible to all cores before the driver enters the sleep/wait state. (cherry picked from commit 7edb503fe4b6d67f47d8bb0dfafb8e699bb0f8a4)
CVE-2026-23213
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-2026-23213
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": "ea8139d8d59bd6f014b317e7423345169a56fe49",
"lessThan": "b2b9ac2bb2c5b5b0a39f7f422bbe12d3ea4ccf34",
"versionType": "git"
},
{
"status": "affected",
"version": "ea8139d8d59bd6f014b317e7423345169a56fe49",
"lessThan": "c1853ebbec980d5c05d431bfd6ded73b1363fd00",
"versionType": "git"
},
{
"status": "affected",
"version": "ea8139d8d59bd6f014b317e7423345169a56fe49",
"lessThan": "cd7ff7fd3e4b77f0b5a292e0926532eaa07c5162",
"versionType": "git"
},
{
"status": "affected",
"version": "ea8139d8d59bd6f014b317e7423345169a56fe49",
"lessThan": "0de604d0357d0d22cbf03af1077d174b641707b6",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_device.c",
"drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c",
"drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.70",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.10",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdgpu/amdgpu_device.c",
"drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c",
"drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23213
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46110 · Revision 1
- Added to Heist Feed
- Publisher date