CVEvulnerability
CVE-2021-47642
7.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-02-26
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-787
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.
Affected configurations
• linux linux kernel (< 4.9.311)
• linux linux kernel (>= 4.10 < 4.14.276)
• linux linux kernel (>= 4.15 < 4.19.238)
• linux linux kernel (>= 4.20 < 5.4.189)
• linux linux kernel (>= 5.5 < 5.10.110)
• linux linux kernel (>= 5.11 < 5.15.33)
• linux linux kernel (>= 5.16 < 5.16.19)
• linux linux kernel (>= 5.17 < 5.17.2)
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- https://git.kernel.org/stable/c/055cdd2e7b992921424d4daaa285ced787fb205f Patch
- https://git.kernel.org/stable/c/08dff482012758935c185532b1ad7d584785a86e Patch
- https://git.kernel.org/stable/c/37a1a2e6eeeb101285cd34e12e48a881524701aa Patch
- https://git.kernel.org/stable/c/41baa86b6c802cdc6ab8ff2d46c083c9be93de81 Patch
- https://git.kernel.org/stable/c/47e5533adf118afaf06d25a3e2aaaab89371b1c5 Patch
- https://git.kernel.org/stable/c/580e5d3815474b8349250c25c16416585a72c7fe Patch
- https://git.kernel.org/stable/c/6a5226e544ac043bb2d8dc1bfe8920d02282f7cd Patch
- https://git.kernel.org/stable/c/72dd5c46a152136712a55bf026a9aa8c1b12b60d Patch
- https://git.kernel.org/stable/c/9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834 Patch