uutils coreutils dd Silent Data Corruption via Unconditional Truncation Error Suppression

published 2026-04-22 6 mo ago modified 2026-10-26 14 d ago also GHSA-wh8p-h9hw-x2mc , EUVD-2026-24975

cvss: 3.3; 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 1%
public exploits: 0; none known

The dd utility in uutils coreutils suppresses errors during file truncation operations by unconditionally calling Result::ok() on truncation attempts. While intended to mimic GNU behavior for special files like /dev/null, the uutils implementation also hides failures on regular files and directories caused by full disks or read-only file systems. This can lead to silent data corruption in backup or migration scripts, as the utility may report a successful operation even when the destination file contains old or garbage data.

Patch / fix

distros 1

rust-coreutils Debian 14 0.10.0-1

debian advisories DEBIAN-CVE-2026-35344

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-2026-35344 updated 2026-06-28 cvss 3.3

rust-coreutils: dd: silent data corruption via unconditional truncation error suppression

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: none
Automatable: no
Technical impact: partial
Assessed: 6 mo ago (2026-04-22)

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
GitHub	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected packages

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

Affected products

Uutils coreutils

Classification

Weakness

CWE-252 Unchecked Return Value

References

github.com /uutils/coreutils/issues/9745
issue-tracking, web
nvd.nist.gov /vuln/detail/CVE-2026-35344
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