# CVE-2021-47642: linux: In the Linux kernel, the following vulnerability has been resolved:  video: fbdev: nvidiafb: Use strscpy() to prevent...

CVE-2021-47642 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47642, released February 26, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-47642
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0029
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow  Coverity complains of a possible buffer overflow. However, given the 'static' scope of nvidia_setup_i2c_bus() it looks like that can't happen after examiniing the call sites.  CID 19036 (#1 of 1): Copy into fixed size buffer (STRING_OVERFLOW) 1. fixed_size_dest: You might overrun the 48-character fixed-size string   chan->adapter.name by copying name without checking the length. 2. parameter_as_source: Note: This defect has an elevated risk because the   source argument is a parameter of the current function.  89        strcpy(chan->adapter.name, name);  Fix this warning by using strscpy() which will silence the warning and prevent any future buffer overflows should the names used to identify the channel become much longer.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.3-1 | [DEBIAN-CVE-2021-47642](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47642.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.17.3-1 | [DEBIAN-CVE-2021-47642](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47642.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.17.3-1 | [DEBIAN-CVE-2021-47642](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47642.md) | Feb 26, 2025 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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