drm/amd/display: Check null pointers before multiple uses
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check null pointers before multiple uses [WHAT & HOW] Poniters, such as stream_enc and dc->bw_vbios, are null checked previously in the same function, so Coverity warns "implies that stream_enc and dc->bw_vbios might be null". They are used multiple times in the subsequent code and need to be checked. This fixes 10 FORWARD_NULL issues reported by Coverity.
CVE-2024-49920
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-2024-49920
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": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "4f51f6d23c5856f105110531f81d84e78e462005",
"versionType": "git"
},
{
"status": "affected",
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "26787fb6c2b2ee0d1a7e1574b36f4711ae40fe27",
"versionType": "git"
},
{
"status": "affected",
"version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
"lessThan": "fdd5ecbbff751c3b9061d8ebb08e5c96119915b4",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c",
"drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c",
"drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c",
"drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c",
"drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c",
"drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource_helpers.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.11.3",
"versionType": "semver",
"lessThanOrEqual": "6.11.*"
},
{
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c",
"drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c",
"drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c",
"drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dio.c",
"drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c",
"drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c",
"drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource_helpers.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-49920
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #45910 · Revision 1
- Added to Heist Feed
- Publisher date