5.5

CVE-2021-47057: crypto: sun8i-ss - Fix memory leak of object d when dma_iv fails to map

Analyzed
AliasesUBUNTU-CVE-2021-47057DEBIAN-CVE-2021-47057
Published 29-02-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47057 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.8% 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
0.22%
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. 29-02-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: sun8i-ss - Fix memory leak of object d when dma_iv fails to map In the case where the dma_iv mapping fails, the return error path leaks the memory allocated to object d. Fix this by adding a new error return label and jumping to this to ensure d is free'd before the return. Addresses-Coverity: ("Resource leak")

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.22% 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.

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≥ ac2614d721dea2ff273af19c6c5d508d58a2bb3e, < 617ec35ed51f731a593ae7274228ef2cfc9cb781 | ≥ ac2614d721dea2ff273af19c6c5d508d58a2bb3e, < e1f2d739849c3239df1ea3f97d40bade4b808410 | ≥ ac2614d721dea2ff273af19c6c5d508d58a2bb3e, < 6516cb852d704ff8d615de1f93cd443a99736c3d | ≥ ac2614d721dea2ff273af19c6c5d508d58a2bb3e, < 98b5ef3e97b16eaeeedb936f8bda3594ff84a70e | 5.10
  • linux_kernel≥ 5.10, < 5.10.37 | ≥ 5.11, < 5.11.21 | ≥ 5.12, < 5.12.4
Debian1 product
  • linux< 5.10.38-1

3 vendors · 65 products

References

8 links