8.4

CVE-2021-47352: virtio-net: Add validation for used length

Modified
AliasesUBUNTU-CVE-2021-47352DEBIAN-CVE-2021-47352
Published 21-05-2024Last modified 05-08-2026

Vulnerability summary

CVE-2021-47352 is a high (CVSS 8.4) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.4, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.4/10
010
High · v3.1 (CVE.org)
EPSS score
0.27%
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 7 · Related 3
RHSA-2024:6753RHSA-2024:6993RHSA-2024:7000RHSA-2024:7001SUSE-SU-2024:1979-1SUSE-SU-2024:1983-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: virtio-net: Add validation for used length This adds validation for used length (might come from an untrusted device) to avoid data corruption or loss.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.27% 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, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu91 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ f6b10209b90d48a84f886ab2b317b5d2cbfe3143, < c1b40d1959517ff2ea473d40eeab4691d6d62462 | ≥ f6b10209b90d48a84f886ab2b317b5d2cbfe3143, < c92298d228f61589dd21657af2bea95fc866b813 | ≥ f6b10209b90d48a84f886ab2b317b5d2cbfe3143, < 3133e01514c3c498f2b01ff210ee6134b70c663c | ≥ f6b10209b90d48a84f886ab2b317b5d2cbfe3143, < ba710baa1cc1b17a0483f7befe03e696efd17292 | ≥ f6b10209b90d48a84f886ab2b317b5d2cbfe3143, < ad993a95c508417acdeb15244109e009e50d8758 | 4.11
  • linux_kernel< 5.4.293 | ≥ 5.5, < 5.10.51 | ≥ 5.11, < 5.12.18 | ≥ 5.13, < 5.13.3
Debian1 product
  • linux< 5.14.6-1

3 vendors · 94 products

References

9 links