CVE-2021-47347

Advisory lineage Upstream: 0 Downstream: 9
Analyzed
Published: 21 May 2024, 14:35
Last modified:11 May 2026, 13:52

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (cve.org)
EPSS Score
0.14% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 May 2024, 14:35
Published
Vulnerability first disclosed
11 May 2026, 13:52
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: wl1251: Fix possible buffer overflow in wl1251_cmd_scan Function wl1251_cmd_scan calls memcpy without checking the length. Harden by checking the length is within the maximum allowed size.

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.14%• Percentile: 34%

Techniques & Countermeasures

  • CWE-120•Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

    The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Affected Systems

  • linux•linux

    ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < 57ad99ae3c6738ba87bad259bb57c641ca68ebf6 | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < d3d8b9c9c7843dce31e284927d4c9904fd5a510a | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < 0f6c0488368c9ac1aa685821916fadba32f5d1ef | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < 115103f6e3f1c26c473766c16439c7c8b235529a | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < d71dddeb5380613f9ef199f3e7368fd78fb1a46e | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < c5e4a10d7bd5d4f419d8b9705dff60cf69b302a1 | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < 302e2ee34c5f7c5d805b7f835d9a6f2b43474e2a | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < 40af3960a15339e8bbd3be50c3bc7b35e1a0b6ea | ≥ 2f01a1f58889fbfeb68b1bc1b52e4197f3333490, < d10a87a3535cce2b890897914f5d0d83df669c63 | 2.6.31

  • linux•linux_kernel

    < 4.4.276 | ≥ 4.5, < 4.9.276 | ≥ 4.10, < 4.14.240 | ≥ 4.15, < 4.19.198 | ≥ 4.20, < 5.4.133 | ≥ 5.5, < 5.10.51 | ≥ 5.11, < 5.12.18 | ≥ 5.13, < 5.13.3

References (9)