GHSA-5f52-v49r-796w · 深刻度： medium — A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access...
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.
総合評価: CVE-2023-4806 は中リスク（47.5/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.44%、70 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.90% | 1.44% | -0.46% |
| 2 | 2026-01-07 | 1.75% | 1.90% | +0.15% |
| 3 | 2026-01-05 | — | 1.75% | — |
EPSS の全履歴 （全 22 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
GHSA-5f52-v49r-796w · 深刻度： medium — A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2023-4806 not yet assigned priority: Debian including 1 source packages (glibc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2023-4806 |
gentoo
|
high | CVE-2023-4806: 1 GLSA(s) (202310-03), 1 atom(s) (sys-libs/glibc); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-4806 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2023-4806 |
suse
|
medium | CVE-2023-4806 severity moderate: SUSE including 514 source package names (compat-libpthread-nonshared-2.28-225.el8_8.6, glibc, …), 859 product×package rows across 52 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7.1, … (52 product lines)): Fixed 496, Known Not Affected 363. | https://www.suse.com/security/cve/CVE-2023-4806/ |
ubuntu
|
low | CVE-2023-4806 low priority: Ubuntu including 2 source packages (eglibc, glibc), 24 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 10, released 10, needs-triage 3, ignored 1. | https://ubuntu.com/security/CVE-2023-4806 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| gnu | glibc | 2.33 | cpe:2.3:a:gnu:glibc:2.33:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus | 9.2 | cpe:2.3:a:redhat:codeready_linux_builder_eus:9.2:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus_for_power_little_endian | 9.0_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus_for_power_little_endian_eus | 9.2_ppc64le | cpe:2.3:a:redhat:codeready_linux_builder_eus_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64 | 9.0_aarch64 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64:9.0_aarch64:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_arm64_eus | 9.2_aarch64 | cpe:2.3:a:redhat:codeready_linux_builder_for_arm64_eus:9.2_aarch64:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems | 9.0_s390x | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_ibm_z_systems_eus | 9.2_s390x | cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems_eus:9.2_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 9.0 | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.8 | cpe:2.3:o:redhat:enterprise_linux_eus:8.8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 9.2 | cpe:2.3:o:redhat:enterprise_linux_eus:9.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64 | 9.0_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64:9.0_aarch64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_arm_64_eus | 9.2_aarch64 | cpe:2.3:o:redhat:enterprise_linux_for_arm_64_eus:9.2_aarch64:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems | 8.0_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.8_s390x | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.8_s390x:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus_s390x | 9.2 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus_s390x:9.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_s390x | 9.2 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_s390x:9.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 8.0_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian | 9.2_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.2_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.8_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.8_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 9.2_ppc64le | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.2_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 9.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:9.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 9.2_ppc64le | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.2_ppc64le:*:*:*:*:*:*:* |
| redhat | enterprise_linux_tus | 8.8 | cpe:2.3:o:redhat:enterprise_linux_tus:8.8:*:*:*:*:*:*:* |
| fedoraproject | fedora | 37 | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
| fedoraproject | fedora | 38 | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
| fedoraproject | fedora | 39 | cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* |