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{"bugzilla": {"description": "perl: Perl threads have a working directory race condition where file operations may target unintended paths", "id": "2369407", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2369407"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "(CWE-362|CWE-426)", "details": ["Perl threads have a working directory race condition where file operations may target unintended paths.\nIf a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone\u00a0that handle for the new thread, which is visible from any third (or\u00a0more) thread already running. \nThis may lead to unintended operations\u00a0such as loading code or accessing files from unexpected locations,\u00a0which a local attacker may be able to exploit.\nThe bug was introduced in commit\u00a011a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6", "A flaw was found in the Perl standard library threads component. This vulnerability can allow a local attacker to exploit a race condition in directory handling to access files or load code from unexpected locations."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2025-40909", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2025-05-30T12:20:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40909\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40909\nhttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1098226\nhttps://github.com/Perl/perl5/commit/11a11ecf4bea72b17d250cfb43c897be1341861e\nhttps://github.com/Perl/perl5/commit/918bfff86ca8d6d4e4ec5b30994451e0bd74aba9.patch\nhttps://github.com/Perl/perl5/issues/10387\nhttps://github.com/Perl/perl5/issues/23010\nhttps://perldoc.perl.org/5.14.0/perl5136delta#Directory-handles-not-copied-to-threads\nhttps://www.openwall.com/lists/oss-security/2025/05/22/2"], "statement": "Within regulated environments, a combination of the following controls acts as a significant barrier to the successful exploitation of a CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') or CWE-426: Untrusted Search Path vulnerability, and therefore downgrades the severity of this particular CVE from Moderate to Low.\nRed Hat enforces least functionality by enabling only essential features, services, and ports to reduce the system\u2019s attack surface. Static code analysis, peer reviews, and robust input validation and error handling detect unsafe input that could affect execution timing or path resolution. Real-time threat detection, including IPS/IDS, antimalware, and continuous system monitoring, enables rapid identification of exploitation attempts. Process isolation reduces the likelihood of concurrent execution conflicts and contains any impact to isolated workloads. Executable search paths are restricted to trusted, explicitly defined directories, mitigating the risk of executing malicious files. These controls effectively lower the likelihood and impact of race conditions and untrusted path exploitation in the environment.", "threat_severity": "Moderate"}