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CVE-2021-47352
virtio-net: Add validation for used length
High8.4EPSS 0.27%
- Published
- Updated
- Reserved
- Assigned by
- Linux
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.
Timeline
ID reserved
By Linux
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 82% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.
Weakness
Affected products
- affected f6b10209b90d48a84f886ab2b317b5d2cbfe3143 – < c1b40d1959517ff2ea473d40eeab4691d6d62462
- affected f6b10209b90d48a84f886ab2b317b5d2cbfe3143 – < c92298d228f61589dd21657af2bea95fc866b813
- affected f6b10209b90d48a84f886ab2b317b5d2cbfe3143 – < 3133e01514c3c498f2b01ff210ee6134b70c663c
- affected f6b10209b90d48a84f886ab2b317b5d2cbfe3143 – < ba710baa1cc1b17a0483f7befe03e696efd17292
- affected f6b10209b90d48a84f886ab2b317b5d2cbfe3143 – < ad993a95c508417acdeb15244109e009e50d8758
- affected 4.11
- unaffected < 4.11
- unaffected 5.4.293 – ≤ 5.4.*
- unaffected 5.10.51 – ≤ 5.10.*
- unaffected 5.12.18 – ≤ 5.12.*
- unaffected 5.13.3 – ≤ 5.13.*
- unaffected 5.14 – ≤ *
References (5)
- https://git.kernel.org/stable/c/c1b40d1959517ff2ea473d40eeab4691d6d62462 (opens in a new tab)
- https://git.kernel.org/stable/c/c92298d228f61589dd21657af2bea95fc866b813 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/3133e01514c3c498f2b01ff210ee6134b70c663c (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/ba710baa1cc1b17a0483f7befe03e696efd17292 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/ad993a95c508417acdeb15244109e009e50d8758 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-47352)Record last updated .