5.5

CVE-2021-47070: uio_hv_generic: Fix another memory leak in error handling paths

Modified
AliasesUBUNTU-CVE-2021-47070DEBIAN-CVE-2021-47070
Published 01-03-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47070 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 8
DLA-4327-1SUSE-SU-2024:1454-1SUSE-SU-2024:1465-1SUSE-SU-2024:1489-1SUSE-SU-2024:1643-1SUSE-SU-2024:1646-1

Timeline

  1. 01-03-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability 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

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu87 products
  • linux< 5.4.0-186.206
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1126.136
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ cdfa835c6e5e87d145f9f632b58843de97509f2b, < 261bbd90cc53d2835343f056770156cf1e82cf03 | ≥ cdfa835c6e5e87d145f9f632b58843de97509f2b, < 5f59240cf25b2f7a0fdffc2701482a70310fec07 | ≥ cdfa835c6e5e87d145f9f632b58843de97509f2b, < 0b0226be3a52dadd965644bc52a807961c2c26df | 4.20
  • linux_kernel≥ 4.20, < 5.12.7 | 5.13:rc1 | 5.13:rc2
Debian1 product
  • linux< 5.14.6-1

3 vendors · 90 products

References

10 links