CVE-2021-47347
kernel: wl1251: Fix possible buffer overflow in wl1251_cmd_scan
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 21, 2024
Updated · August 5, 2026
Description
A vulnerability was discovered in the Linux kernel's wl1251 wireless driver, where the wl1251_cmd_scan function used memcpy without checking if the data length was within safe limits. This could potentially lead to a buffer overflow, which might cause system instability or crashes.
Statement
This vulnerability is rated as a moderate severity because this issue can lead to a system crash or instability, it does not pose an immediate security risk or data compromise.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-122 · Heap-based Buffer Overflow