CVE-2021-47642

video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow

HIGH
7.8
CVSS Score
Published: February 26, 2025 at 01:54 AM UTC
Updated: June 17, 2026 at 04:18 AM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 0.3%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.9.3112.6.12 ≤ v < 4.14.2762.6.12 ≤ v < 4.19.2382.6.12 ≤ v < 4.9.3112.6.12 ≤ v < 5.10.1102.6.12 ≤ v < 5.15.332.6.12 ≤ v < 5.16.192.6.12 ≤ v < 5.17.22.6.12 ≤ v < 5.182.6.12 ≤ v < 5.4.1894.10 ≤ v < 4.14.2764.15 ≤ v < 4.19.2384.20 ≤ v < 5.4.1895.11 ≤ v < 5.15.335.16 ≤ v < 5.16.195.17 ≤ v < 5.17.25.5 ≤ v < 5.10.1101da177e4c3f41524e886b7f1b8a0c1fc7321cac22.6.12
Vendor states this is fixed in 055cdd2e7b992921424d4daaa285ced787fb205f (fixed)
Vendor states this is fixed in 08dff482012758935c185532b1ad7d584785a86e (fixed)
Vendor states this is fixed in 37a1a2e6eeeb101285cd34e12e48a881524701aa (fixed)
Vendor states this is fixed in 41baa86b6c802cdc6ab8ff2d46c083c9be93de81 (fixed)
Vendor states this is fixed in 47e5533adf118afaf06d25a3e2aaaab89371b1c5 (fixed)
Vendor states this is fixed in 580e5d3815474b8349250c25c16416585a72c7fe (fixed)
Vendor states this is fixed in 6a5226e544ac043bb2d8dc1bfe8920d02282f7cd (fixed)
Vendor states this is fixed in 72dd5c46a152136712a55bf026a9aa8c1b12b60d (fixed)
Vendor states this is fixed in 9ff2f7294ab0f011cd4d1b7dcd9a07d8fdf72834 (fixed)
Vendor states this is fixed in 2.6.12 (unaffected)
Vendor states this is fixed in 4.14.276 (unaffected)
Vendor states this is fixed in 4.19.238 (unaffected)
Vendor states this is fixed in 4.9.311 (unaffected)
Vendor states this is fixed in 5.10.110 (unaffected)
Vendor states this is fixed in 5.15.33 (unaffected)
Vendor states this is fixed in 5.16.19 (unaffected)
Vendor states this is fixed in 5.17.2 (unaffected)
Vendor states this is fixed in 5.18 (unaffected)
Vendor states this is fixed in 5.4.189 (unaffected)

References (9)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/055cdd2e7b992921424d4daaa285ced787fb205f
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/08dff482012758935c185532b1ad7d584785a86e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/37a1a2e6eeeb101285cd34e12e48a881524701aa
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/41baa86b6c802cdc6ab8ff2d46c083c9be93de81
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/47e5533adf118afaf06d25a3e2aaaab89371b1c5
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/580e5d3815474b8349250c25c16416585a72c7fe
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6a5226e544ac043bb2d8dc1bfe8920d02282f7cd
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/72dd5c46a152136712a55bf026a9aa8c1b12b60d

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card