drm/amd/display: prevent hang on link training fail
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: prevent hang on link training fail [Why] When link training fails, the phy clock will be disabled. However, in enable_streams, it is assumed that link training succeeded and the mux selects the phy clock, causing a hang when a register write is made. [How] When enable_stream is hit, check if link training failed. If it did, fall back to the ref clock to avoid a hang and keep the system in a recoverable state.
CVE-2025-37870
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-2025-37870
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": "7462475e3a06fbb0b36243b391296f9f411e9041",
"lessThan": "52cdc47cf6519e2912a34d29b7eeb3f10ca85efa",
"versionType": "git"
},
{
"status": "affected",
"version": "7462475e3a06fbb0b36243b391296f9f411e9041",
"lessThan": "0363c03672cd3191f037905bf981eb523a3b71b1",
"versionType": "git"
},
{
"status": "affected",
"version": "7462475e3a06fbb0b36243b391296f9f411e9041",
"lessThan": "04bf4f2a497e9877c425c5124652e61fb8a1a0aa",
"versionType": "git"
},
{
"status": "affected",
"version": "7462475e3a06fbb0b36243b391296f9f411e9041",
"lessThan": "8058061ed9d6bc259d1e678607b07d259342c08f",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.25",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.14.4",
"versionType": "semver",
"lessThanOrEqual": "6.14.*"
},
{
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-37870
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #45976 · Revision 1
- Added to Heist Feed
- Publisher date