CVE-2021-47348
Linux Kernel vulnerability
- Published21 May 2024
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 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HAffected products
Remediation
Frequently asked
Is CVE-2021-47348 being actively exploited?
CVE-2021-47348 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.99%.
How severe is CVE-2021-47348?
CVE-2021-47348 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.99% probability of exploitation.
Which products are affected by CVE-2021-47348?
Affected products include Linux Kernel.
How do I fix CVE-2021-47348?
Upgrade affected software to a fixed version, for example Linux Kernel 5.12.18 or later, then confirm no affected versions remain in your inventory.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2021-47348 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.