4.4

CVE-2021-47547: net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound

Analyzed
AliasesUBUNTU-CVE-2021-47547DEBIAN-CVE-2021-47547
Published 24-05-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-47547 is a medium (CVSS 4.4) Improper Validation of Array Index vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 14.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.4, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.4/10
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 6 · Related 6
SUSE-SU-2024:2493-1SUSE-SU-2024:2561-1SUSE-SU-2024:2894-1SUSE-SU-2024:2901-1SUSE-SU-2024:2939-1SUSE-SU-2024:2947-1

Timeline

  1. 24-05-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: tulip: de4x5: fix the problem that the array 'lp->phy[8]' may be out of bound In line 5001, if all id in the array 'lp->phy[8]' is not 0, when the 'for' end, the 'k' is 8. At this time, the array 'lp->phy[8]' may be out of bound.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

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.

Ubuntu89 products
  • linuxAll versions (No fix recorded) | < 4.15.0-169.177 | < 5.4.0-100.113
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1121.129 | < 5.4.0-1066.69
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ec5bd0aef1cec96830d0c7e06d3597d9e786cc98 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 142ead3dc70411bd5977e8c47a6d8bf22287b3f8 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < d3dedaa5a601107cfedda087209772c76e364d58 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2c1a6a9a011d622a7c61324a97a49801ba425eff | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 77ff166909458646e66450e42909e0adacc99049 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f059fa40f0fcc6bc7a12e0f2a2504e9a4ff74f1f | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 12f907cb11576b8cd0b1d95a16d1f10ed5bb7237 | ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 61217be886b5f7402843677e4be7e7e83de9cb41 | 2.6.12
  • linux_kernel< 4.4.294 | ≥ 4.5, < 4.9.292 | ≥ 4.10, < 4.14.257 | ≥ 4.15, < 4.19.220 | ≥ 4.20, < 5.4.164 | ≥ 5.5, < 5.10.84 | ≥ 5.11, < 5.15.7 | 5.16:rc1
Debian1 product
  • linux< 5.15.15-1

3 vendors · 92 products

References

12 links
Show all 12 references