CVE-2021-47171

low-risk
Published 2024-03-25

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

Do I need to act?

-
0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (16)

Patch https://git.kernel.org/stable/c/200dbfcad8011e50c3cec269ed7b980836eeb1fa
Patch https://git.kernel.org/stable/c/22c840596af0c09068b6cf948616e6496e59e07f
Patch https://git.kernel.org/stable/c/46a8b29c6306d8bbfd92b614ef65a47c900d8e70
Patch https://git.kernel.org/stable/c/635ac38b36255d3cfb8312cf7c471334f4d537e0
Patch https://git.kernel.org/stable/c/70c886ac93f87ae7214a0c69151a28a8075dd95b
Patch https://git.kernel.org/stable/c/9e6a3eccb28779710cbbafc4f4258d92509c6d07
Patch https://git.kernel.org/stable/c/9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc
Patch https://git.kernel.org/stable/c/b95fb96e6339e34694dd578fb6bde3575b01af17
Patch https://git.kernel.org/stable/c/200dbfcad8011e50c3cec269ed7b980836eeb1fa
Patch https://git.kernel.org/stable/c/22c840596af0c09068b6cf948616e6496e59e07f
Patch https://git.kernel.org/stable/c/46a8b29c6306d8bbfd92b614ef65a47c900d8e70
Patch https://git.kernel.org/stable/c/635ac38b36255d3cfb8312cf7c471334f4d537e0
Patch https://git.kernel.org/stable/c/70c886ac93f87ae7214a0c69151a28a8075dd95b
Patch https://git.kernel.org/stable/c/9e6a3eccb28779710cbbafc4f4258d92509c6d07
Patch https://git.kernel.org/stable/c/9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc
Patch https://git.kernel.org/stable/c/b95fb96e6339e34694dd578fb6bde3575b01af17
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal