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CVE-2021-47348

drm/amd/display: Avoid HDCP over-read and corruption PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected 4c283fdac08abf3211533f70623c90a34f41d08d before c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e; affected 4c283fdac08abf3211533f70623c90a34f41d08d before 44c7c901cb368a9f2493748f213b247b5872639f; affected 4c283fdac08abf3211533f70623c90a34f41d08d before 3b2b93a485fb7a970bc8b5daef16f4cf579d172f; affected 4c283fdac08abf3211533f70623c90a34f41d08d before 06888d571b513cbfc0b41949948def6cb81021b2
Linux / Linuxaffected 5.5; unaffected 0 before 5.5; unaffected 5.10.51 through 5.10.*; unaffected 5.12.18 through 5.12.*; unaffected 5.13.3 through 5.13.*; unaffected 5.14 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.