{"id":"UBUNTU-CVE-2021-38604","details":"In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.","modified":"2025-07-16T08:26:47.458938Z","published":"2021-08-12T16:15:00Z","withdrawn":"2025-07-18T16:46:57Z","upstream":["CVE-2021-38604"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-38604"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-38604"}],"affected":[{"package":{"name":"glibc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/glibc@2.34-0ubuntu3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.34-0ubuntu3"}]}],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"glibc-doc","binary_version":"2.34-0ubuntu3"},{"binary_name":"glibc-source","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc-bin","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc-bin-dbgsym","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc-dev-bin","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc-dev-bin-dbgsym","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc-devtools","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc-devtools-dbgsym","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-amd64","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-amd64-dbgsym","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-dbg","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-dev","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-dev-amd64","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-dev-i386","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-dev-s390","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-dev-x32","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-i386","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-i386-dbgsym","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-prof","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-s390","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-s390-dbgsym","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-x32","binary_version":"2.34-0ubuntu3"},{"binary_name":"libc6-x32-dbgsym","binary_version":"2.34-0ubuntu3"},{"binary_name":"locales","binary_version":"2.34-0ubuntu3"},{"binary_name":"locales-all","binary_version":"2.34-0ubuntu3"},{"binary_name":"nscd","binary_version":"2.34-0ubuntu3"},{"binary_name":"nscd-dbgsym","binary_version":"2.34-0ubuntu3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-38604.json"}}],"schema_version":"1.7.3","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":"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"}]}