cve-2024-44955
Vulnerability from cvelistv5
Published
2024-09-04 18:35
Modified
2024-12-19 09:19
Severity ?
EPSS score ?
Summary
drm/amd/display: Don't refer to dc_sink in is_dsc_need_re_compute
References
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"id": "CVE-2024-44955",
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"timestamp": "2024-09-10T17:40:07.003970Z",
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"affected": [
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"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c"
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"versionType": "original_commit_for_fix"
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Don\u0027t refer to dc_sink in is_dsc_need_re_compute\n\n[Why]\nWhen unplug one of monitors connected after mst hub, encounter null pointer dereference.\n\nIt\u0027s due to dc_sink get released immediately in early_unregister() or detect_ctx(). When\ncommit new state which directly referring to info stored in dc_sink will cause null pointer\ndereference.\n\n[how]\nRemove redundant checking condition. Relevant condition should already be covered by checking\nif dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected."
}
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"url": "https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263"
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"url": "https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4"
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"title": "drm/amd/display: Don\u0027t refer to dc_sink in is_dsc_need_re_compute",
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"cveId": "CVE-2024-44955",
"datePublished": "2024-09-04T18:35:54.412Z",
"dateReserved": "2024-08-21T05:34:56.666Z",
"dateUpdated": "2024-12-19T09:19:03.846Z",
"state": "PUBLISHED"
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"nvd": "{\"cve\":{\"id\":\"CVE-2024-44955\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-04T19:15:30.423\",\"lastModified\":\"2024-12-09T13:10:03.600\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Don\u0027t refer to dc_sink in is_dsc_need_re_compute\\n\\n[Why]\\nWhen unplug one of monitors connected after mst hub, encounter null pointer dereference.\\n\\nIt\u0027s due to dc_sink get released immediately in early_unregister() or detect_ctx(). When\\ncommit new state which directly referring to info stored in dc_sink will cause null pointer\\ndereference.\\n\\n[how]\\nRemove redundant checking condition. Relevant condition should already be covered by checking\\nif dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: No hacer referencia a dc_sink en is_dsc_need_re_compute [Por qu\u00e9] Cuando se desconecta uno de los monitores conectados despu\u00e9s del concentrador mst, se produce una desreferencia de puntero nulo. Esto se debe a que dc_sink se libera inmediatamente en early_unregister() o detect_ctx(). Cuando se confirma un nuevo estado que hace referencia directa a la informaci\u00f3n almacenada en dc_sink, se producir\u00e1 una desreferencia de puntero nulo. [C\u00f3mo] Eliminar la condici\u00f3n de comprobaci\u00f3n redundante. La condici\u00f3n relevante ya deber\u00eda estar cubierta comprobando si dsc_aux es nulo o no. Tambi\u00e9n se restablece dsc_aux a NULL cuando se desconecta el conector.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"6.10.5\",\"matchCriteriaId\":\"E4CB0927-C720-465B-99F2-3E47215515F2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c7e65cab54a89f4df54110f0b44c4ade93d1a911\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.