{"id":"CVE-2023-5156","title":"A flaw was found in the GNU C Library","summary":"A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-401"],"vendor":"gnu","product":"glibc","affected":["glibc >= 2.34, < 2.39","enterprise_linux = 8.0","enterprise_linux = 9.0"],"patched":["glibc 2.39"],"published":"2023-09-25","updated":"2026-10-14","sourceUpdated":"2026-10-14T22:17:18.940","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-5156","references":[{"url":"https://access.redhat.com/security/cve/CVE-2023-5156","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2240541","label":"secalert@redhat.com"},{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=30884","label":"secalert@redhat.com"},{"url":"https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=ec6b95c3303c700eb89eebeda2d7264cc184a796","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/5","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/8","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/security/cve/CVE-2023-5156","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2240541","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202402-01","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=30884","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=ec6b95c3303c700eb89eebeda2d7264cc184a796","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-831302.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.01583,"epssPercentile":0.75059,"ingestedAt":"2026-10-14T23:00:02.005Z","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2025-10-15T20:03:45.500372Z"},"slug":"CVE-2023-5156","body":"## Overview\n\nA flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.\n\n## Affected\n\n- `glibc >= 2.34, < 2.39`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `glibc 2.39`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}