by Kastro CVE-2021-47348
Linux Linux — drm/amd/display: Avoid HDCP over-read and corruption
Description · from the CVE record
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid HDCP over-read and corruption Instead of reading the desired 5 bytes of the actual target field, the code was reading 8. This could result in a corrupted value if the trailing 3 bytes were non-zero, so instead use an appropriately sized and zero-initialized bounce buffer, and read only 5 bytes before casting to u64.
Affected
ProductAffectedFixed inSource
Linux4c283fdac08abf3211533f70623c90a34f41d08d – < c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2ec5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2eCNA
Linux4c283fdac08abf3211533f70623c90a34f41d08d – < 44c7c901cb368a9f2493748f213b247b5872639f44c7c901cb368a9f2493748f213b247b5872639fCNA
Linux4c283fdac08abf3211533f70623c90a34f41d08d – < 3b2b93a485fb7a970bc8b5daef16f4cf579d172f3b2b93a485fb7a970bc8b5daef16f4cf579d172fCNA
Linux4c283fdac08abf3211533f70623c90a34f41d08d – < 06888d571b513cbfc0b41949948def6cb81021b206888d571b513cbfc0b41949948def6cb81021b2CNA
Linux5.55.10.51CNA
linux_kernel1da177e4c3f4 – < c5b518f4b98dc5b518f4b98dCISA-ADP
linux_kernel1da177e4c3f4 – < 44c7c901cb3644c7c901cb36CISA-ADP
linux_kernel1da177e4c3f4 – < 3b2b93a485fb3b2b93a485fbCISA-ADP
linux_kernel1da177e4c3f4 – < 06888d571b5106888d571b51CISA-ADP
linux_kernelsee advisory5.14CISA-ADP
linux_kernelsee advisory5.10.51CISA-ADP
linux_kernelsee advisory5.12.18CISA-ADP
Scores by source
CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial