CVE-2023-0881: canonical linux-bluefield Improper Input Validation
Vulnerability summary
CVE-2023-0881 is a high (CVSS 7.5) Improper Input Validation vulnerability in canonical linux-bluefield. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.2% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 31-03-2025PublishedVulnerability first disclosed.
- 31-03-2025Last modifiedVulnerability information updated.
Description
Running DDoS on tcp port 22 will trigger a kernel crash. This issue is introduced by the backport of a commit regarding nft_lookup without the subsequent fixes that were introduced after this commit. The resolution of this CVE introduces those commits to the linux-bluefield package.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.43%
Chance of exploitation in the next 30 days
Percentile
36%
Versus all other CVEs
30-day change
+0.01 pp
From 0.43% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugs.launchpad.net)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-1333Inefficient Regular Expression ComplexityThe product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Affected systems
Ubuntu2 products
- linux-bluefieldAll versions (No fix recorded)
- ubuntu package linux-bluefield≥ 5.4.0-1001.2, < 5.4.0-1058.64
Canonical1 product
- linux-bluefield< 5.4.0-1058.64
2 vendors · 3 products