7.8

CVE-2021-47201: iavf: free q_vectors before queues in iavf_disable_vf

Modified
AliasesUBUNTU-CVE-2021-47201DEBIAN-CVE-2021-47201
Published 10-04-2024Last modified 05-08-2026

Vulnerability summary

CVE-2021-47201 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
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-2024:1644-1SUSE-SU-2024:1645-1SUSE-SU-2024:1647-1SUSE-SU-2024:1650-1

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: iavf: free q_vectors before queues in iavf_disable_vf iavf_free_queues() clears adapter->num_active_queues, which iavf_free_q_vectors() relies on, so swap the order of these two function calls in iavf_disable_vf(). This resolves a panic encountered when the interface is disabled and then later brought up again after PF communication is restored.

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

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu87 products
  • linuxAll versions (No fix recorded) | < 5.4.0-97.110
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1064.67
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 926e8c83d4c1c2dac0026637eb0d492df876489e | ≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 78638b47132244e3934dc5dc79f6372d5ce8e98c | ≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 9ef6589cac9a8c47f5544ccdf4c498093733bb3f | ≥ 65c7006f234c9ede887d468f595f259a5c5cc552, < 89f22f129696ab53cfbc608e0a2184d0fea46ac1 | 4.13
  • linux_kernel≥ 4.13, < 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 · 90 products

References

8 links