8.8

CVE-2021-47184: i40e: Fix NULL ptr dereference on VSI filter sync

Modified
AliasesUBUNTU-CVE-2021-47184DEBIAN-CVE-2021-47184
Published 10-04-2024Last modified 05-08-2026

Vulnerability summary

CVE-2021-47184 is a high (CVSS 8.8) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.25%
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 11 · Related 11
SUSE-SU-2024:1641-1SUSE-SU-2024:1642-1SUSE-SU-2024:1643-1SUSE-SU-2024:1644-1SUSE-SU-2024:1645-1SUSE-SU-2024:1646-1

Timeline

  1. 10-04-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix NULL ptr dereference on VSI filter sync Remove the reason of null pointer dereference in sync VSI filters. Added new I40E_VSI_RELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.25% 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.

Ubuntu88 products
  • linuxAll versions (No fix recorded) | < 4.15.0-167.175 | < 5.4.0-97.110
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 4.15.0-1119.127 | < 5.4.0-1064.67
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 41c445ff0f482bb6e6b72dcee9e598e20575f743, < 78f2a9e831f9610e3655a0be5e675e1aa2472089 | ≥ 41c445ff0f482bb6e6b72dcee9e598e20575f743, < 87c421ab4a43433cb009fea44bbbc77f46913e1d | ≥ 41c445ff0f482bb6e6b72dcee9e598e20575f743, < c30162da91327e4cdf7cd03079f096bb3654738c | ≥ 41c445ff0f482bb6e6b72dcee9e598e20575f743, < f866513ead4370402428ef724b03c3312295c178 | ≥ 41c445ff0f482bb6e6b72dcee9e598e20575f743, < e91e8427a1e1633a0261e3bb0201c836ac5b3890 | ≥ 41c445ff0f482bb6e6b72dcee9e598e20575f743, < 37d9e304acd903a445df8208b8a13d707902dea6 | 3.12
  • linux_kernel≥ 3.12, < 4.14.256 | ≥ 4.15, < 4.19.218 | ≥ 4.20, < 5.4.162 | ≥ 5.5, < 5.10.82 | ≥ 5.11, < 5.15.5 | 5.16:rc1
Debian1 product
  • linux< 5.15.5-1

3 vendors · 91 products

References

10 links