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CVE-2021-47348

CRITICAL
Published 2024-05-21T14:35:53.613Z
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CVSS Score

V3.1
9.1
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.003
probability
of exploitation in the wild

There is a 0.3% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.545
Higher than 54.5% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
NONE
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Linux

Linux

Affected Versions:

5.10.51 5.12.18 5.13.3 5.14
linux

linux_kernel

Affected Versions:

1da177e4c3f4
linux

linux_kernel

Affected Versions:

1da177e4c3f4
linux

linux_kernel

Affected Versions:

1da177e4c3f4
linux

linux_kernel

Affected Versions:

1da177e4c3f4
linux

linux_kernel

Affected Versions:

5.14
linux

linux_kernel

Affected Versions:

5.10.51
linux

linux_kernel

Affected Versions:

5.12.18
linux

linux_kernel

Affected Versions:

5.13.3

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed CRITICAL

GHSA-jq29-8xm6-ccxq

Advisory Details

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 Scoring

CVSS Score

9.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47348
WEB https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2
WEB https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172f
WEB https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639f
WEB https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e

Advisory provided by GitHub Security Advisory Database. Published: May 21, 2024, Modified: July 3, 2024

References

https://git.kernel.org/stable/c/c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e
https://git.kernel.org/stable/c/44c7c901cb368a9f2493748f213b247b5872639f
https://git.kernel.org/stable/c/3b2b93a485fb7a970bc8b5daef16f4cf579d172f
https://git.kernel.org/stable/c/06888d571b513cbfc0b41949948def6cb81021b2
Published: 2024-05-21T14:35:53.613Z
Last Modified: 2025-05-04T07:09:07.225Z
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