Bug 2550237

Summary: CVE-2026-107373 perl-ExtUtils-Typemaps-Default: perl-extutils-typemaps-default: Denial of Service via out-of-bounds read on non-string input [fedora-all]
Product: [Fedora] Fedora Reporter: Vladimir Vasilev <vvasilev>
Component: perl-ExtUtils-Typemaps-DefaultAssignee: Miro HronĨok <mhroncok>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: mhroncok, perl-devel, perl-maint
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["6bee3e64-1abf-4588-a02a-065bfc520423"]}
Fixed In Version: perl-ExtUtils-Typemaps-Default-1.07-1.fc44 perl-ExtUtils-Typemaps-Default-1.07-1.fc43 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-10-21 16:44:19 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: 2548308    
Bug Blocks: 2548972    

Description Vladimir Vasilev 2026-10-13 07:34:14 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.

ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument.

The typemap uses

    $var = std::string( SvPV_nolen($arg), SvCUR($arg) )

However, evaluation order for C++ arguments is not specified, and some compilers may produce code that evalutes SvCUR($arg) first.

When $arg is not a string (for example, an interger, number or a reference) then SvCUR will return an invalid value, and the program may abort or segfault.

Comment 1 Fedora Update System 2026-10-13 18:15:44 UTC
FEDORA-2026-6186a0239f (perl-ExtUtils-Typemaps-Default-1.07-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-6186a0239f

Comment 2 Fedora Update System 2026-10-13 18:15:51 UTC
FEDORA-2026-9989a9a8f5 (perl-ExtUtils-Typemaps-Default-1.07-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-9989a9a8f5

Comment 3 Fedora Update System 2026-10-13 18:15:58 UTC
FEDORA-2026-97823cd220 (perl-ExtUtils-Typemaps-Default-1.07-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-97823cd220

Comment 4 Fedora Update System 2026-10-14 02:18:21 UTC
FEDORA-2026-97823cd220 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-97823cd220`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-97823cd220

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-10-14 02:45:47 UTC
FEDORA-2026-6186a0239f has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-6186a0239f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-6186a0239f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-10-14 02:58:08 UTC
FEDORA-2026-9989a9a8f5 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-9989a9a8f5`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-9989a9a8f5

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-10-21 16:44:19 UTC
FEDORA-2026-9989a9a8f5 (perl-ExtUtils-Typemaps-Default-1.07-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-10-22 01:48:49 UTC
FEDORA-2026-6186a0239f (perl-ExtUtils-Typemaps-Default-1.07-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.