cve-2021-47046
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2024-11-04 11:58
Severity ?
EPSS score ?
Summary
drm/amd/display: Fix off by one in hdmi_14_process_transaction()
References
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix off by one in hdmi_14_process_transaction()\n\nThe hdcp_i2c_offsets[] array did not have an entry for\nHDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one\nread overflow. I added an entry and copied the 0x0 value for the offset\nfrom similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c.\n\nI also declared several of these arrays as having HDCP_MESSAGE_ID_MAX\nentries. This doesn\u0027t change the code, but it\u0027s just a belt and\nsuspenders approach to try future proof the code."
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"datePublished": "2024-02-28T08:13:50.320Z",
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"nvd": "{\"cve\":{\"id\":\"CVE-2021-47046\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:40.277\",\"lastModified\":\"2024-02-28T14:06:45.783\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amd/display: Fix off by one in hdmi_14_process_transaction()\\n\\nThe hdcp_i2c_offsets[] array did not have an entry for\\nHDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one\\nread overflow. I added an entry and copied the 0x0 value for the offset\\nfrom similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c.\\n\\nI also declared several of these arrays as having HDCP_MESSAGE_ID_MAX\\nentries. This doesn\u0027t change the code, but it\u0027s just a belt and\\nsuspenders approach to try future proof the code.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amd/display: correcci\u00f3n por uno en hdmi_14_process_transaction() La matriz hdcp_i2c_offsets[] no ten\u00eda una entrada para HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE, por lo que provoc\u00f3 un desbordamiento de lectura desactivado por uno. Agregu\u00e9 una entrada y copi\u00e9 el valor 0x0 para el desplazamiento de un c\u00f3digo similar en drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c. Tambi\u00e9n declar\u00e9 que varias de estas matrices ten\u00edan entradas HDCP_MESSAGE_ID_MAX. Esto no cambia el c\u00f3digo, pero es solo un enfoque de cintur\u00f3n y tirantes para probar el c\u00f3digo a prueba de futuro.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.