Medium severity5.9NVD Advisory· Published Sep 18, 2023· Updated May 12, 2026
CVE-2023-4806
CVE-2023-4806
Description
A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
Affected products
5- Red Hat/Red Hat Enterprise Linux 9v5cpe:/a:redhat:enterprise_linux:9::appstreamRange: 0:2.34-60.el9_2.7
- Red Hat/Red Hat Enterprise Linux 6v5cpe:/o:redhat:enterprise_linux:6
- Red Hat/Red Hat Enterprise Linux 7v5cpe:/o:redhat:enterprise_linux:7
- Red Hat/Red Hat Enterprise Linux 8v5cpe:/o:redhat:enterprise_linux:8::baseosRange: 0:2.28-225.el8_8.6
- Red Hat/Red Hat Virtualization 4 for Red Hat Enterprise Linux 8v5cpe:/o:redhat:rhev_hypervisor:4.4::el8Range: 0:2.28-189.8.el8_6
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
17- access.redhat.com/errata/RHSA-2023:5453nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2023:5455nvdThird Party Advisory
- access.redhat.com/security/cve/CVE-2023-4806nvdThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- www.openwall.com/lists/oss-security/2023/10/03/4nvd
- www.openwall.com/lists/oss-security/2023/10/03/5nvd
- www.openwall.com/lists/oss-security/2023/10/03/6nvd
- www.openwall.com/lists/oss-security/2023/10/03/8nvd
- access.redhat.com/errata/RHBA-2024:2413nvd
- access.redhat.com/errata/RHSA-2023:7409nvd
- cert-portal.siemens.com/productcert/html/ssa-082556.htmlnvd
- cert-portal.siemens.com/productcert/html/ssa-831302.htmlnvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4DBUQRRPB47TC3NJOUIBVWUGFHBJAFDL/nvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DFG4P76UHHZEWQ26FWBXG76N2QLKKPZA/nvd
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDAQWHTSVOCOZ5K6KPIWKRT3JX4RTZUR/nvd
- security.gentoo.org/glsa/202310-03nvd
- security.netapp.com/advisory/ntap-20240125-0008/nvd
News mentions
0No linked articles in our index yet.