What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-21 · updated 2026-08-04
• Weakness: CWE-787

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.

Affected products

• Linux kernel: before 5.4.293; from 5.5 before 5.10.51; from 5.11 before 5.12.18; from 5.13 before 5.13.3 — fixed in 5.10.51, 5.12.18, 5.13.3, 5.4.293

How to fix

Upgrade to a fixed version: Linux kernel 5.10.51, 5.12.18, 5.13.3, 5.4.293. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3133e01514c3c498f2b01ff210ee6134b70c663c
• https://git.kernel.org/stable/c/ad993a95c508417acdeb15244109e009e50d8758
• https://git.kernel.org/stable/c/ba710baa1cc1b17a0483f7befe03e696efd17292
• https://git.kernel.org/stable/c/c1b40d1959517ff2ea473d40eeab4691d6d62462
• https://git.kernel.org/stable/c/c92298d228f61589dd21657af2bea95fc866b813
• https://git.kernel.org/stable/c/3133e01514c3c498f2b01ff210ee6134b70c663c
• https://git.kernel.org/stable/c/ad993a95c508417acdeb15244109e009e50d8758
• https://git.kernel.org/stable/c/ba710baa1cc1b17a0483f7befe03e696efd17292
• https://git.kernel.org/stable/c/c92298d228f61589dd21657af2bea95fc866b813

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