CVE-2021-47070

Advisory lineage Upstream: 0 Downstream: 11
Modified
Published: 01 Mar 2024, 21:15
Last modified:11 May 2026, 13:47

Vulnerability Summary

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

Timeline

01 Mar 2024, 21:15
Published
Vulnerability first disclosed
11 May 2026, 13:47
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix another memory leak in error handling paths Memory allocated by 'vmbus_alloc_ring()' at the beginning of the probe function is never freed in the error handling path. Add the missing 'vmbus_free_ring()' call. Note that it is already freed in the .remove function.

CVSS Metrics

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

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

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

    ≥ cdfa835c6e5e87d145f9f632b58843de97509f2b, < 261bbd90cc53d2835343f056770156cf1e82cf03 | ≥ cdfa835c6e5e87d145f9f632b58843de97509f2b, < 5f59240cf25b2f7a0fdffc2701482a70310fec07 | ≥ cdfa835c6e5e87d145f9f632b58843de97509f2b, < 0b0226be3a52dadd965644bc52a807961c2c26df | 4.20

  • linux•linux_kernel

    ≥ 4.20, < 5.12.7 | 5.13:rc1 | 5.13:rc2

References (4)