CVE-2023-52634

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52634
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52634.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52634
Downstream
Published
2024-04-02T06:49:12Z
Modified
2025-10-21T14:07:29.109644Z
Summary
drm/amd/display: Fix disable_otg_wa logic
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Fix disableotgwa logic

[Why] When switching to another HDMI mode, we are unnecesarilly disabling/enabling FIFO causing both HPO and DIG registers to be set at the same time when only HPO is supposed to be set.

This can lead to a system hang the next time we change refresh rates as there are cases when we don't disable OTG/FIFO but FIFO is enabled when it isn't supposed to be.

[How] Removing the enable/disable FIFO entirely.

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8774029f76b9806f2f3586bb0502408076767fd5
Fixed
ce29728ef6485a367934cc100249c66dd3cde5b6
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
8774029f76b9806f2f3586bb0502408076767fd5
Fixed
2ce156482a6fef349d2eba98e5070c412d3af662

Affected versions

v6.*

v6.5
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.7.1
v6.7.2
v6.7.3

Database specific

vanir_signatures

[
    {
        "id": "CVE-2023-52634-0d40b3f6",
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ce29728ef6485a367934cc100249c66dd3cde5b6",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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            ]
        },
        "deprecated": false,
        "target": {
            "file": "drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c"
        }
    },
    {
        "id": "CVE-2023-52634-d7bd5db2",
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2ce156482a6fef349d2eba98e5070c412d3af662",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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        },
        "deprecated": false,
        "target": {
            "file": "drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c"
        }
    },
    {
        "id": "CVE-2023-52634-f25ebfdf",
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@ce29728ef6485a367934cc100249c66dd3cde5b6",
        "signature_type": "Function",
        "digest": {
            "function_hash": "18751593918090329397002161961815587909",
            "length": 1061.0
        },
        "deprecated": false,
        "target": {
            "function": "dcn35_disable_otg_wa",
            "file": "drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c"
        }
    },
    {
        "id": "CVE-2023-52634-f670aa1d",
        "signature_version": "v1",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2ce156482a6fef349d2eba98e5070c412d3af662",
        "signature_type": "Function",
        "digest": {
            "function_hash": "18751593918090329397002161961815587909",
            "length": 1061.0
        },
        "deprecated": false,
        "target": {
            "function": "dcn35_disable_otg_wa",
            "file": "drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c"
        }
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.7.4