Bug 2555385

Summary: CVE-2026-110759 perl-Text-CSV_XS: Text::CSV_XS: Data corruption via trailing carriage return in empty fields [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: perl-Text-CSV_XSAssignee: Paul Howarth <paul>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: anon.amish, mspacek, paul, perl-devel, xavier
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["175693f1-3db2-4b17-b7f9-388e7086412f"]}
Fixed In Version: perl-Text-CSV_XS-1.65-1.fc43 perl-Text-CSV_XS-1.65-1.fc44 perl-Text-CSV_XS-1.65-1.fc45 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-10-24 16:17:45 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2554501    

Description Ganesh 2026-10-19 05:34:07 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Text::CSV_XS versions before 1.65 for Perl return a 0xFF byte that is not in the input for an empty last field followed by a lone CR in parse.

When the input to parse ends in a separator and a lone CR, the parser treats the end of the input as the next character and stores the end-of-file marker in the field as the byte 0xFF. With binary set, parse("a,\r") returns the fields "a" and "\xFF". On UTF-8 flagged input the last field is a UTF-8 flagged string holding that lone byte, which is malformed UTF-8. The same input with a non-empty last field is rejected as an error.

A CRLF file read line by line and chomped ends this way when its last column is empty, so the application receives a byte that is not in its input.

Comment 1 Fedora Update System 2026-10-19 07:20:57 UTC
FEDORA-2026-c4f1537d44 (perl-Text-CSV_XS-1.65-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c4f1537d44

Comment 2 Fedora Update System 2026-10-19 07:22:33 UTC
FEDORA-2026-035fae971f (perl-Text-CSV_XS-1.65-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-035fae971f

Comment 3 Fedora Update System 2026-10-19 07:24:01 UTC
FEDORA-2026-39d5c46c12 (perl-Text-CSV_XS-1.65-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-39d5c46c12

Comment 4 Fedora Update System 2026-10-24 16:17:45 UTC
FEDORA-2026-39d5c46c12 (perl-Text-CSV_XS-1.65-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 5 Fedora Update System 2026-10-24 16:37:12 UTC
FEDORA-2026-035fae971f (perl-Text-CSV_XS-1.65-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-10-31 18:43:10 UTC
FEDORA-2026-c4f1537d44 (perl-Text-CSV_XS-1.65-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.