drm/amd/display: use proper context for logging
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: use proper context for logging The same as the rest of the code, get_ss_info_from_atombios() uses calc_pll_cs->ctx->logger for logging. But calc_pll_cs->ctx is initialized only later in calc_pll_max_vco_construct(). Therefore, any output using DC_LOG_SYNC() leads to a NULL pointer deference in get_ss_info_from_atombios(). According to Sashiko, the very same problem exists in dce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers() too. To avoid accessing the NULL context, use clk_src->base.ctx->logger everywhere. That context in base is initialized earlier in dce110_clk_src_construct() and dce112_clk_src_construct(). Before get_ss_info_from_atombios() or Sashiko's get_pix_clk_dividers functions above are actually called. This is done by redefining DC_LOGGER to CTX->logger. Before: dce110_clk_src_construct() did: -> sets clk_src->base.ctx = ctx; -> ss_info_from_atombios_create() -> get_ss_info_from_atombios() <- uses calc_pll_cs->ctx # BOOM -> calc_pll_max_vco_construct() <- sets calc_pll_cs->ctx After: dce110_clk_src_construct() does: -> sets clk_src->base.ctx = ctx; -> ss_info_from_atombios_create() -> get_ss_info_from_atombios() <- uses clk_src->base.ctx (cherry picked from commit 6f16fcbb0c46a87e3d9685407e906573d60104b0)
CVE-2026-80704
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-2026-80704
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": "1296423bf23c7a58133970e223b1f47ec6570308",
"lessThan": "07b52a41765722ec971e0cd9739b140bf4933998",
"versionType": "git"
},
{
"status": "affected",
"version": "1296423bf23c7a58133970e223b1f47ec6570308",
"lessThan": "a94e62b7c7018fcfe0251e53fa96af30f12d923a",
"versionType": "git"
},
{
"status": "affected",
"version": "1296423bf23c7a58133970e223b1f47ec6570308",
"lessThan": "02647d98340738f918690ed227fdcf154db1b84a",
"versionType": "git"
},
{
"status": "affected",
"version": "1296423bf23c7a58133970e223b1f47ec6570308",
"lessThan": "f556bc844cc4423e5ad41ae41a4c24f1cf75b978",
"versionType": "git"
},
{
"status": "affected",
"version": "1296423bf23c7a58133970e223b1f47ec6570308",
"lessThan": "114b42507b6a23d9d24e24e4ef165233332c64d4",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.103",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80704
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46631 · Revision 1
- Added to Heist Feed
- Publisher date