CVE-2026-35373

Publication date 22 April 2026

Last updated 11 November 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

3.3 · Low

Score breakdown

Description

A logic error in the ln utility of uutils coreutils causes the program to reject source paths containing non-UTF-8 filename bytes when using target-directory forms (e.g., ln SOURCE... DIRECTORY). While GNU ln treats filenames as raw bytes and creates the links correctly, the uutils implementation enforces UTF-8 encoding, resulting in a failure to stat the file and a non-zero exit code. In environments where automated scripts or system tasks process valid but non-UTF-8 filenames common on Unix filesystems, this divergence causes the utility to fail, leading to a local denial of service for those specific operations.

Read the notes from the security team

Status

Package Ubuntu Release Status
rust-coreutils 26.10 stonking
Fixed in 0.10.0-1ubuntu1
26.04 LTS resolute
Fixed in 0.10.0-1ubuntu2~26.04.1
25.10 questing Ignored end of life, was needed
24.04 LTS noble
Vulnerable
22.04 LTS jammy Not in release

Notes

john-breton

Fixed in 0.10.0-1ubuntu2~26.04.1 in resolute-updates (LP: #2166202), but not yet in the -security pocket.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
rust-coreutils

Severity score breakdown

CVSS version: CVSS v3.0

Base score 3.3 · Low

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

    • USN-9041-1
    • uutils coreutils vulnerabilities
    • 11 November 2026

Other references

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