{"id":"UBUNTU-CVE-2025-15281","details":"Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.","modified":"2026-05-20T16:20:25.786327425Z","published":"2026-01-20T14:16:00Z","related":["USN-8005-1"],"upstream":["CVE-2025-15281"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-15281"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-15281"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2026/01/20/3"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8005-1"}],"affected":[{"package":{"name":"eglibc","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/eglibc?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.17-93ubuntu4","2.18-0ubuntu1","2.18-0ubuntu2","2.18-0ubuntu4","2.18-0ubuntu5","2.18-0ubuntu6","2.18-0ubuntu7","2.19-0ubuntu2","2.19-0ubuntu3","2.19-0ubuntu4","2.19-0ubuntu5","2.19-0ubuntu6","2.19-0ubuntu6.1","2.19-0ubuntu6.3","2.19-0ubuntu6.4","2.19-0ubuntu6.5","2.19-0ubuntu6.6","2.19-0ubuntu6.7","2.19-0ubuntu6.8","2.19-0ubuntu6.9","2.19-0ubuntu6.10","2.19-0ubuntu6.11","2.19-0ubuntu6.13","2.19-0ubuntu6.14","2.19-0ubuntu6.15","2.19-0ubuntu6.15+esm1","2.19-0ubuntu6.15+esm2","2.19-0ubuntu6.15+esm3","2.19-0ubuntu6.15+esm4"],"ecosystem_specific":{"binaries":[{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"eglibc-source"},{"binary_name":"libc-bin","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"libc-dev-bin","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"libc6","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"libc6-amd64","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"libc6-armel","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-dev-amd64"},{"binary_name":"libc6-dev-armel","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"libc6-dev-i386","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"libc6-dev-x32","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"libc6-i386","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-pic"},{"binary_name":"libc6-prof","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_version":"2.19-0ubuntu6.15+esm4","binary_name":"libc6-x32"},{"binary_name":"multiarch-support","binary_version":"2.19-0ubuntu6.15+esm4"},{"binary_name":"nscd","binary_version":"2.19-0ubuntu6.15+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/glibc?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.23-0ubuntu11.3+esm9"}]}],"versions":["2.21-0ubuntu4","2.21-0ubuntu5","2.21-0ubuntu6","2.23-0ubuntu1","2.23-0ubuntu2","2.23-0ubuntu3","2.23-0ubuntu4","2.23-0ubuntu5","2.23-0ubuntu6","2.23-0ubuntu7","2.23-0ubuntu9","2.23-0ubuntu10","2.23-0ubuntu11","2.23-0ubuntu11.2","2.23-0ubuntu11.3","2.23-0ubuntu11.3+esm1","2.23-0ubuntu11.3+esm2","2.23-0ubuntu11.3+esm3","2.23-0ubuntu11.3+esm5","2.23-0ubuntu11.3+esm6","2.23-0ubuntu11.3+esm7","2.23-0ubuntu11.3+esm8"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"glibc-source","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"libc-bin"},{"binary_name":"libc-dev-bin","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"libc6"},{"binary_name":"libc6-amd64","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"libc6-armel"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"libc6-dev-amd64"},{"binary_name":"libc6-dev-armel","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_name":"libc6-dev-i386","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_name":"libc6-dev-s390","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"libc6-dev-x32"},{"binary_name":"libc6-i386","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_name":"libc6-pic","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_name":"libc6-s390","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"libc6-x32"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"locales"},{"binary_name":"locales-all","binary_version":"2.23-0ubuntu11.3+esm9"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"multiarch-support"},{"binary_version":"2.23-0ubuntu11.3+esm9","binary_name":"nscd"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/glibc?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.27-3ubuntu1.6+esm6"}]}],"versions":["2.26-0ubuntu2","2.26-0ubuntu2.1","2.27-0ubuntu2","2.27-0ubuntu3","2.27-3ubuntu1","2.27-3ubuntu1.2","2.27-3ubuntu1.3","2.27-3ubuntu1.4","2.27-3ubuntu1.5","2.27-3ubuntu1.6","2.27-3ubuntu1.6+esm1","2.27-3ubuntu1.6+esm2","2.27-3ubuntu1.6+esm3","2.27-3ubuntu1.6+esm4","2.27-3ubuntu1.6+esm5"],"ecosystem_specific":{"binaries":[{"binary_name":"glibc-source","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"libc-bin"},{"binary_name":"libc-dev-bin","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_name":"libc6","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_name":"libc6-amd64","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_name":"libc6-armel","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"libc6-dev-amd64"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"libc6-dev-armel"},{"binary_name":"libc6-dev-i386","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"libc6-dev-s390"},{"binary_name":"libc6-dev-x32","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_name":"libc6-i386","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"libc6-lse"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"libc6-pic"},{"binary_name":"libc6-s390","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_name":"libc6-x32","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_name":"locales","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"locales-all"},{"binary_name":"multiarch-support","binary_version":"2.27-3ubuntu1.6+esm6"},{"binary_version":"2.27-3ubuntu1.6+esm6","binary_name":"nscd"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/glibc?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.31-0ubuntu9.18+esm1"}]}],"versions":["2.30-0ubuntu2","2.30-0ubuntu3","2.31-0ubuntu5","2.31-0ubuntu6","2.31-0ubuntu7","2.31-0ubuntu9","2.31-0ubuntu9.1","2.31-0ubuntu9.2","2.31-0ubuntu9.3","2.31-0ubuntu9.7","2.31-0ubuntu9.9","2.31-0ubuntu9.12","2.31-0ubuntu9.14","2.31-0ubuntu9.15","2.31-0ubuntu9.16","2.31-0ubuntu9.17","2.31-0ubuntu9.18"],"ecosystem_specific":{"binaries":[{"binary_name":"glibc-source","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc-bin","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc-dev-bin","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc6","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc6-amd64","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc6-armel","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc6-dev-amd64","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc6-dev-armel","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc6-dev-i386","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_version":"2.31-0ubuntu9.18+esm1","binary_name":"libc6-dev-s390"},{"binary_version":"2.31-0ubuntu9.18+esm1","binary_name":"libc6-dev-x32"},{"binary_name":"libc6-i386","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_version":"2.31-0ubuntu9.18+esm1","binary_name":"libc6-lse"},{"binary_name":"libc6-pic","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_version":"2.31-0ubuntu9.18+esm1","binary_name":"libc6-prof"},{"binary_name":"libc6-s390","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"libc6-x32","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"locales","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"locales-all","binary_version":"2.31-0ubuntu9.18+esm1"},{"binary_name":"nscd","binary_version":"2.31-0ubuntu9.18+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/glibc?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.35-0ubuntu3.13"}]}],"versions":["2.34-0ubuntu3","2.35-0ubuntu1","2.35-0ubuntu3","2.35-0ubuntu3.1","2.35-0ubuntu3.3","2.35-0ubuntu3.4","2.35-0ubuntu3.5","2.35-0ubuntu3.6","2.35-0ubuntu3.7","2.35-0ubuntu3.8","2.35-0ubuntu3.9","2.35-0ubuntu3.10","2.35-0ubuntu3.11","2.35-0ubuntu3.12"],"ecosystem_specific":{"binaries":[{"binary_name":"glibc-source","binary_version":"2.35-0ubuntu3.13"},{"binary_name":"libc-bin","binary_version":"2.35-0ubuntu3.13"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"libc-dev-bin"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"libc-devtools"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"libc6"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"libc6-amd64"},{"binary_name":"libc6-dev-amd64","binary_version":"2.35-0ubuntu3.13"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"libc6-dev-i386"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"libc6-dev-s390"},{"binary_name":"libc6-dev-x32","binary_version":"2.35-0ubuntu3.13"},{"binary_name":"libc6-i386","binary_version":"2.35-0ubuntu3.13"},{"binary_name":"libc6-prof","binary_version":"2.35-0ubuntu3.13"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"libc6-s390"},{"binary_name":"libc6-x32","binary_version":"2.35-0ubuntu3.13"},{"binary_name":"locales","binary_version":"2.35-0ubuntu3.13"},{"binary_name":"locales-all","binary_version":"2.35-0ubuntu3.13"},{"binary_version":"2.35-0ubuntu3.13","binary_name":"nscd"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/glibc?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.39-0ubuntu8.7"}]}],"versions":["2.38-1ubuntu6","2.38-3ubuntu1","2.39-0ubuntu1","2.39-0ubuntu2","2.39-0ubuntu6","2.39-0ubuntu8","2.39-0ubuntu8.1","2.39-0ubuntu8.2","2.39-0ubuntu8.3","2.39-0ubuntu8.4","2.39-0ubuntu8.5","2.39-0ubuntu8.6"],"ecosystem_specific":{"binaries":[{"binary_name":"glibc-source","binary_version":"2.39-0ubuntu8.7"},{"binary_name":"libc-bin","binary_version":"2.39-0ubuntu8.7"},{"binary_version":"2.39-0ubuntu8.7","binary_name":"libc-dev-bin"},{"binary_name":"libc-devtools","binary_version":"2.39-0ubuntu8.7"},{"binary_version":"2.39-0ubuntu8.7","binary_name":"libc6"},{"binary_name":"libc6-amd64","binary_version":"2.39-0ubuntu8.7"},{"binary_version":"2.39-0ubuntu8.7","binary_name":"libc6-dev-amd64"},{"binary_name":"libc6-dev-i386","binary_version":"2.39-0ubuntu8.7"},{"binary_version":"2.39-0ubuntu8.7","binary_name":"libc6-dev-s390"},{"binary_version":"2.39-0ubuntu8.7","binary_name":"libc6-dev-x32"},{"binary_name":"libc6-i386","binary_version":"2.39-0ubuntu8.7"},{"binary_name":"libc6-s390","binary_version":"2.39-0ubuntu8.7"},{"binary_name":"libc6-x32","binary_version":"2.39-0ubuntu8.7"},{"binary_name":"locales","binary_version":"2.39-0ubuntu8.7"},{"binary_version":"2.39-0ubuntu8.7","binary_name":"locales-all"},{"binary_version":"2.39-0ubuntu8.7","binary_name":"nscd"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/glibc?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.42-0ubuntu3.1"}]}],"versions":["2.41-6ubuntu1","2.41-6ubuntu2","2.41-9ubuntu1","2.42-0ubuntu1","2.42-0ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"glibc-source","binary_version":"2.42-0ubuntu3.1"},{"binary_name":"libc-bin","binary_version":"2.42-0ubuntu3.1"},{"binary_version":"2.42-0ubuntu3.1","binary_name":"libc-dev-bin"},{"binary_name":"libc-devtools","binary_version":"2.42-0ubuntu3.1"},{"binary_name":"libc6","binary_version":"2.42-0ubuntu3.1"},{"binary_version":"2.42-0ubuntu3.1","binary_name":"libc6-amd64"},{"binary_name":"libc6-dev-amd64","binary_version":"2.42-0ubuntu3.1"},{"binary_version":"2.42-0ubuntu3.1","binary_name":"libc6-dev-i386"},{"binary_name":"libc6-dev-x32","binary_version":"2.42-0ubuntu3.1"},{"binary_name":"libc6-i386","binary_version":"2.42-0ubuntu3.1"},{"binary_name":"libc6-x32","binary_version":"2.42-0ubuntu3.1"},{"binary_name":"locales","binary_version":"2.42-0ubuntu3.1"},{"binary_name":"locales-all","binary_version":"2.42-0ubuntu3.1"},{"binary_version":"2.42-0ubuntu3.1","binary_name":"nscd"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}},{"package":{"name":"glibc","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/glibc?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.42-2ubuntu5"}]}],"versions":["2.42-0ubuntu3","2.42-2ubuntu1","2.42-2ubuntu2","2.42-2ubuntu4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"glibc-source","binary_version":"2.42-2ubuntu5"},{"binary_name":"libc-bin","binary_version":"2.42-2ubuntu5"},{"binary_version":"2.42-2ubuntu5","binary_name":"libc-dev-bin"},{"binary_name":"libc-devtools","binary_version":"2.42-2ubuntu5"},{"binary_name":"libc-gconv-modules-extra","binary_version":"2.42-2ubuntu5"},{"binary_name":"libc6","binary_version":"2.42-2ubuntu5"},{"binary_version":"2.42-2ubuntu5","binary_name":"libc6-amd64"},{"binary_name":"libc6-dev-amd64","binary_version":"2.42-2ubuntu5"},{"binary_name":"libc6-dev-i386","binary_version":"2.42-2ubuntu5"},{"binary_version":"2.42-2ubuntu5","binary_name":"libc6-dev-x32"},{"binary_name":"libc6-i386","binary_version":"2.42-2ubuntu5"},{"binary_name":"libc6-x32","binary_version":"2.42-2ubuntu5"},{"binary_name":"locales","binary_version":"2.42-2ubuntu5"},{"binary_version":"2.42-2ubuntu5","binary_name":"locales-all"},{"binary_name":"nscd","binary_version":"2.42-2ubuntu5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-15281.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}