{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-0915", "assignerOrgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18", "state": "PUBLISHED", "assignerShortName": "glibc", "dateReserved": "2026-01-13T19:02:42.388Z", "datePublished": "2026-01-15T22:08:41.630Z", "dateUpdated": "2026-01-15T22:08:41.630Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "glibc", "vendor": "The GNU C Library", "versions": [{"lessThanOrEqual": "2.42", "status": "affected", "version": "2.0", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Igor Morgenstern, Aisle Research"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver."}], "value": "Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver."}], "impacts": [{"capecId": "CAPEC-204", "descriptions": [{"lang": "en", "value": "CAPEC-204 Lifting Sensitive Data Embedded in Cache"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-908", "description": "CWE-908 Use of Uninitialized Resource", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "3ff69d7a-14f2-4f67-a097-88dee7810d18", "shortName": "glibc", "dateUpdated": "2026-01-15T22:08:41.630Z"}, "references": [{"url": "https://sourceware.org/bugzilla/show_bug.cgi?id=33802"}], "source": {"discovery": "UNKNOWN"}, "title": "getnetbyaddr and getnetbyaddr_r leak stack contents to DNS resovler", "x_generator": {"engine": "Vulnogram 0.5.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver."}], "id": "CVE-2026-0915", "lastModified": "2026-01-15T22:16:12.457", "metrics": {}, "published": "2026-01-15T22:16:12.457", "references": [{"source": "3ff69d7a-14f2-4f67-a097-88dee7810d18", "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=33802"}], "sourceIdentifier": "3ff69d7a-14f2-4f67-a097-88dee7810d18", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "3ff69d7a-14f2-4f67-a097-88dee7810d18", "type": "Secondary"}]}

{"bugzilla": {"description": "glibc: glibc: Information disclosure via zero-valued network query", "id": "2430201", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430201"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-908", "details": ["A flaw was found in glibc, the GNU C Library. When an application calls the `getnetbyaddr` or `getnetbyaddr_r` functions to resolve a network address, and the system's `nsswitch.conf` file is configured to use a DNS (Domain Name System) backend for network lookups, a query for a zero-valued network can lead to the disclosure of stack memory contents. This information is leaked to the configured DNS resolver, potentially allowing an attacker who controls the resolver to gain sensitive data from the affected system."], "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-2026-0915", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "compat-glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "compat-glibc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "glibc", "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": "2026-01-15T22:08:41Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-0915\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-0915\nhttps://sourceware.org/bugzilla/show_bug.cgi?id=33802"], "statement": "This vulnerability is rated Moderate for Red Hat products. It allows for information disclosure of stack contents to a configured DNS resolver when an application utilizes `getnetbyaddr` or `getnetbyaddr_r` with a DNS backend specified in `nsswitch.conf` for a zero-valued network query. This affects Red Hat Enterprise Linux and OpenShift Container Platform.", "threat_severity": "Moderate"}

{"created": "2026-01-16T13:43:15.274228+00:00", "updated": "2026-01-16T13:43:15.274253+00:00", "vendors": ["gnu", "gnu$PRODUCT$glibc"]}