CVE-2021-47171

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 25 Mar 2024, 09:16
Last modified:11 May 2026, 13:49

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 Mar 2024, 09:16
Published
Vulnerability first disclosed
11 May 2026, 13:49
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: net: usb: fix memory leak in smsc75xx_bind Syzbot reported memory leak in smsc75xx_bind(). The problem was is non-freed memory in case of errors after memory allocation. backtrace: [<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline] [<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460 [<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Techniques & Countermeasures

  • CWE-401•Missing Release of Memory after Effective Lifetime

    The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Affected Systems

  • linux•linux

    ≥ d0cad871703b898a442e4049c532ec39168e5b57, < 200dbfcad8011e50c3cec269ed7b980836eeb1fa | ≥ d0cad871703b898a442e4049c532ec39168e5b57, < 22c840596af0c09068b6cf948616e6496e59e07f | ≥ d0cad871703b898a442e4049c532ec39168e5b57, < 9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc | ≥ d0cad871703b898a442e4049c532ec39168e5b57, < 9e6a3eccb28779710cbbafc4f4258d92509c6d07 | ≥ d0cad871703b898a442e4049c532ec39168e5b57, < b95fb96e6339e34694dd578fb6bde3575b01af17 | ≥ d0cad871703b898a442e4049c532ec39168e5b57, < 635ac38b36255d3cfb8312cf7c471334f4d537e0 | ≥ d0cad871703b898a442e4049c532ec39168e5b57, < 70c886ac93f87ae7214a0c69151a28a8075dd95b | ≥ d0cad871703b898a442e4049c532ec39168e5b57, < 46a8b29c6306d8bbfd92b614ef65a47c900d8e70 | 2.6.34

  • linux•linux_kernel

    ≥ 2.6.34, < 4.4.271 | ≥ 4.5, < 4.9.271 | ≥ 4.10, < 4.14.235 | ≥ 4.15, < 4.19.193 | ≥ 4.20, < 5.4.124 | ≥ 5.5, < 5.10.42 | ≥ 5.11, < 5.12.9

References (8)