A flaw was found in the vhost library in DPDK. Function vhost_user_set_inflight_fd() does not validate `msg->payload.inflight.num_queues`, possibly causing out-of-bounds memory read/write. Any software using DPDK vhost library may crash as a result of this vulnerability.
総合評価: CVE-2021-3839 は中リスク（53.1/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.26%、66 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 | 2026-06-23 | 1.21% | 1.26% | +0.05% |
| 2 | 2026-06-15 | 0.59% | 1.21% | +0.62% |
| 3 | 2026-04-19 | — | 0.59% | — |
EPSS の全履歴 （全 13 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2021-3839 not yet assigned priority: Debian including 1 source packages (dpdk), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-3839 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2021-3839 |
suse
|
medium | CVE-2021-3839 severity moderate: SUSE including 67 source package names (dpdk, dpdk-19.11.10-150400.2.10, …), 223 product×package rows across 50 product lines (HPE Helion OpenStack 8, SUSE CaaS Platform 4.0, … (50 product lines)): Fixed 125, Known Not Affected 98. | https://www.suse.com/security/cve/CVE-2021-3839/ |
ubuntu
|
medium | CVE-2021-3839 medium priority: Ubuntu including 1 source packages (dpdk), 7 status rows across 7 suites (bionic, focal, impish, jammy, kinetic, upstream, xenial): released 4, not-affected 2, needs-triage 1. | https://ubuntu.com/security/CVE-2021-3839 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| dpdk | data_plane_development_kit | < 22.03 | cpe:2.3:a:dpdk:data_plane_development_kit:*:*:*:*:*:*:*:* |
| dpdk | data_plane_development_kit | 22.03 | cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc1:*:*:*:*:*:* |
| dpdk | data_plane_development_kit | 22.03 | cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc2:*:*:*:*:*:* |
| dpdk | data_plane_development_kit | 22.03 | cpe:2.3:a:dpdk:data_plane_development_kit:22.03:rc3:*:*:*:*:*:* |
| fedoraproject | fedora | 35 | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
| 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_fast_datapath | 7.0 | cpe:2.3:a:redhat:enterprise_linux_fast_datapath:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_fast_datapath | 8.0 | cpe:2.3:a:redhat:enterprise_linux_fast_datapath:8.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://access.redhat.com/security/cve/CVE-2021-3839 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2025882 | Issue Tracking Patch Third Party Advisory |
| https://github.com/DPDK/dpdk/commit/6442c329b9d2ded0f44b27d2016aaba8ba5844c5 | Patch Third Party Advisory |