CVE-2021-47348
CRITICAL EPSS 58.0%
Published May 21, 20242y ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Published May 21, 2024 2y ago
Last Modified Jun 17, 2026 2w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
58.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
Affected Products 3
References 4
- git.kernel.org https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2
- git.kernel.org https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172f
- git.kernel.org https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639f
- git.kernel.org https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e
Remediation
- git.kernel.org https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2
- git.kernel.org https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172f
- git.kernel.org https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639f
- git.kernel.org https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e