Bug 2460524

Summary: CVE-2026-6846 gdb: Binutils: Arbitrary code execution via malformed XCOFF object file processing [fedora-all]
Product: [Fedora] Fedora Reporter: Avinash Hanwate <ahanwate>
Component: gdbAssignee: Kevin Buettner <kevinb>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: aburgess, ahajkova, fweimer, guinevere, jan, keiths, kevinb, mcermak, mkolar, suraj.ghimire7
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["1ae54686-cc02-478d-ac92-8850581c40d1"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-04-23 15:42:29 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: 2460006    

Description Avinash Hanwate 2026-04-22 08:05:21 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.
Comment 1 Andrew Burgess 2026-04-23 15:42:29 UTC 
The CVE links to this bug: https://bugzilla.redhat.com/show_bug.cgi?id=2460006 which is the binutils version of this bug.

This then links to the upstream bug: https://sourceware.org/bugzilla/show_bug.cgi?id=34049

Which indicates that the bug is fixed, and that the fix is in the function xcoff_link_add_symbols.  See comment: https://sourceware.org/bugzilla/show_bug.cgi?id=34049#c3 for details.

This is not the first CVE in xcoff_link_add_symbols we've seen recently, see: https://bugzilla.redhat.com/show_bug.cgi?id=2443833.

The analysis on that bug shows that xcoff_link_add_symbols is not used or called by GDB.  As such this issue does not apply to GDB.