3.3

CVE-2021-47671: can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path

Analyzed
AliasesUBUNTU-CVE-2021-47671DEBIAN-CVE-2021-47671
Published 17-04-2025Last modified 11-05-2026

Vulnerability summary

CVE-2021-47671 is a low (CVSS 3.3) vulnerability in linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 7.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 3.3, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
3.3/10
010
Low · v3.1 (CVE.org)
EPSS score
0.18%
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 5 · Related 4
RHSA-2023:2458SUSE-SU-2025:01620-1SUSE-SU-2025:01627-1SUSE-SU-2025:01640-1SUSE-SU-2025:1573-1

Timeline

  1. 17-04-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: can: etas_es58x: es58x_rx_err_msg(): fix memory leak in error path In es58x_rx_err_msg(), if can->do_set_mode() fails, the function directly returns without calling netif_rx(skb). This means that the skb previously allocated by alloc_can_err_skb() is not freed. In other terms, this is a memory leak. This patch simply removes the return statement in the error branch and let the function continue. Issue was found with GCC -fanalyzer, please follow the link below for details.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.18% 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.

Ubuntu77 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≥ 8537257874e949a59c834cecfd5a063e11b64b0b, < 4f389e1276a5389c92cef860c9fde8e1c802a871 | ≥ 8537257874e949a59c834cecfd5a063e11b64b0b, < 7eb0881aec26099089f12ae850aebd93190b1dfe | ≥ 8537257874e949a59c834cecfd5a063e11b64b0b, < d9447f768bc8c60623e4bb3ce65b8f4654d33a50 | 5.13
  • linux_kernel≥ 5.13, < 5.14.19 | ≥ 5.15, < 5.15.3
Debian1 product
  • linux< 5.15.3-1

3 vendors · 80 products

References

7 links