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The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Centos_linux | — | Upgrade glibc-develUpgrade glibc-utilsUpgrade glibc-commonUpgrade glibc-staticUpgrade glibc-headersUpgrade glibcUpgrade nscd | Dec 1, 2016 | Feb 24, 2015 |
| Debian | — | Upgrade eglibcUpgrade glibc | Jul 30, 2024 | Feb 24, 2015 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Nov 12, 2015 |
| Gentoo Linux | — | Upgrade sys-libs/glibc. | Oct 30, 2017 | Feb 24, 2015 |
| Oracle_linux | — | Upgrade glibc-develUpgrade glibc-staticUpgrade glibc-commonUpgrade glibc-utilsUpgrade glibcUpgrade glibc-headersUpgrade nscd | Oct 16, 2024 | Feb 24, 2015 |
| Redhat_linux | — | Upgrade glibc-headersUpgrade glibc-commonUpgrade glibc-debuginfo-commonUpgrade nscdUpgrade glibc-utilsUpgrade glibc-debuginfoUpgrade glibc-develUpgrade glibcUpgrade glibc-static | Jul 30, 2016 | Feb 24, 2015 |
| Suse | — | Upgrade glibc-infoUpgrade glibc-testsuiteUpgrade glibc-utils-32bitUpgrade glibcUpgrade glibc-profile-x86Upgrade glibc-x86Upgrade glibc-extraUpgrade glibc-profileUpgrade glibc-profile-32bitUpgrade nscdUpgrade glibc-32bitUpgrade sle-sdk-releaseUpgrade glibc-obsoleteUpgrade glibc-develUpgrade glibc-localeUpgrade glibc-locale-32bitUpgrade glibc-devel-static-32bitUpgrade glibc-locale-x86Upgrade glibc-devel-32bitUpgrade glibc-i18ndataUpgrade glibc-utilsUpgrade glibc-htmlUpgrade glibc-devel-static | Feb 26, 2015 | Feb 24, 2015 |
| Ubuntu | — | Upgrade libc6 | Nov 8, 2024 | Feb 24, 2015 |
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