uutils coreutils sort Local Denial of Service via Forced UTF-8 Parsing

published 2026-04-22 6 mo ago modified 2026-10-26 13 d ago also GHSA-f2jv-wjjc-2c94 , EUVD-2026-24980

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits: 0; none known

The sort utility in uutils coreutils is vulnerable to a process panic when using the --files0-from option with inputs containing non-UTF-8 filenames. The implementation enforces UTF-8 encoding and utilizes expect(), causing an immediate crash when encountering valid but non-UTF-8 paths. This diverges from GNU sort, which treats filenames as raw bytes. A local attacker can exploit this to crash the utility and disrupt automated pipelines.

Patch / fix

distros 1

rust-coreutils Debian 14 0.10.0-1

debian advisories DEBIAN-CVE-2026-35348

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-35348 updated 2026-06-28 cvss 5.5

rust-coreutils: sort: local denial of service via forced UTF-8 parsing

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 6 mo ago (2026-04-22)

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/uutils/coreutils/issues/9696 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
crates.io	coreutils	<=0.8.0	no fix listed

Affected products

Uutils coreutils

Classification

Weakness

CWE-248 Uncaught Exception

References

github.com /uutils/coreutils/issues/9696
issue-tracking, exploit, web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2026-35348
advisory
github.com /uutils/coreutils
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary