5.3

CVE-2021-47075: nvmet: fix memory leak in nvmet_alloc_ctrl()

Analyzed
AliasesUBUNTU-CVE-2021-47075DEBIAN-CVE-2021-47075
Published 01-03-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47075 is a medium (CVSS 5.3) vulnerability in linux. EPSS estimates a 0.91% chance of exploitation in the next 30 days, higher than 59.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.91%
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

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: nvmet: fix memory leak in nvmet_alloc_ctrl() When creating ctrl in nvmet_alloc_ctrl(), if the cntlid_min is larger than cntlid_max of the subsystem, and jumps to the "out_free_changed_ns_list" label, but the ctrl->sqs lack of be freed. Fix this by jumping to the "out_free_sqs" label.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.91%

Chance of exploitation in the next 30 days

Percentile

60%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.91% 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: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu62 products
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
  • linux-aws-5.19All versions (No fix recorded)
Linux2 products
  • linux≥ 94a39d61f80fcd679debda11e1ca02b88d90e67e, < 4720f29acb3fe67aa8aa71e6b675b079d193aaeb | ≥ 94a39d61f80fcd679debda11e1ca02b88d90e67e, < afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a | ≥ 94a39d61f80fcd679debda11e1ca02b88d90e67e, < fec356a61aa3d3a66416b4321f1279e09e0f256f | 5.7
  • linux_kernel≥ 5.7, < 5.10.40 | ≥ 5.11, < 5.12.7 | 5.13:rc1 | 5.13:rc2
Debian1 product
  • linux< 5.10.40-1

3 vendors · 65 products

References

7 links