CVE-2021-47171
What it is
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
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-401
- Record status
- Modified
Affected
- Linux Kernel < 4.4.271
- Linux Kernel < 4.9.271
- Linux Kernel < 4.14.235
- Linux Kernel < 4.19.193
- Linux Kernel < 5.4.124
- Linux Kernel < 5.10.42
- Linux Kernel < 5.12.9
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-47171.md and follow it. Check whether this project is affected by CVE-2021-47171. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/200dbfcad8011e50c3cec269ed7b980836eeb1fa
- https://git.kernel.org/stable/c/22c840596af0c09068b6cf948616e6496e59e07f
- https://git.kernel.org/stable/c/46a8b29c6306d8bbfd92b614ef65a47c900d8e70
- https://git.kernel.org/stable/c/635ac38b36255d3cfb8312cf7c471334f4d537e0
- https://git.kernel.org/stable/c/70c886ac93f87ae7214a0c69151a28a8075dd95b
- https://git.kernel.org/stable/c/9e6a3eccb28779710cbbafc4f4258d92509c6d07
- https://git.kernel.org/stable/c/9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc
- https://git.kernel.org/stable/c/b95fb96e6339e34694dd578fb6bde3575b01af17
- https://git.kernel.org/stable/c/200dbfcad8011e50c3cec269ed7b980836eeb1fa
- https://git.kernel.org/stable/c/22c840596af0c09068b6cf948616e6496e59e07f
References
- https://git.kernel.org/stable/c/200dbfcad8011e50c3cec269ed7b980836eeb1fa
- https://git.kernel.org/stable/c/22c840596af0c09068b6cf948616e6496e59e07f
- https://git.kernel.org/stable/c/46a8b29c6306d8bbfd92b614ef65a47c900d8e70
- https://git.kernel.org/stable/c/635ac38b36255d3cfb8312cf7c471334f4d537e0
- https://git.kernel.org/stable/c/70c886ac93f87ae7214a0c69151a28a8075dd95b
- https://git.kernel.org/stable/c/9e6a3eccb28779710cbbafc4f4258d92509c6d07
- https://git.kernel.org/stable/c/9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc
- https://git.kernel.org/stable/c/b95fb96e6339e34694dd578fb6bde3575b01af17
- https://git.kernel.org/stable/c/200dbfcad8011e50c3cec269ed7b980836eeb1fa
- https://git.kernel.org/stable/c/22c840596af0c09068b6cf948616e6496e59e07f
- https://git.kernel.org/stable/c/46a8b29c6306d8bbfd92b614ef65a47c900d8e70
- https://git.kernel.org/stable/c/635ac38b36255d3cfb8312cf7c471334f4d537e0
- https://git.kernel.org/stable/c/70c886ac93f87ae7214a0c69151a28a8075dd95b
- https://git.kernel.org/stable/c/9e6a3eccb28779710cbbafc4f4258d92509c6d07
- https://git.kernel.org/stable/c/9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc
- https://git.kernel.org/stable/c/b95fb96e6339e34694dd578fb6bde3575b01af17