A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption). This vulnerability is similar with the older CVE-2019-18808.
総合評価: CVE-2021-3744 は公開エクスプロイトあり（51.8/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.54%、41 パーセンタイル） 根拠: 公開エクスプロイトが 2 件参照されています（Exploit-DB）。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 0.01% | 0.54% | +0.53% |
| 2 | 2025-03-17 | 0.05% | 0.01% | -0.05% |
| 3 | 2023-09-25 | — | 0.05% | — |
EPSS の全履歴 （全 9 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 |
|---|---|---|---|---|---|---|
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| 2.1 | 2.0 | LOW |
|
3.9 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2021-3744 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-3744 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2021-3744 |
suse
|
medium | CVE-2021-3744 severity moderate: SUSE including 637 source package names (0.16.2:kmod-25-6.10.1, 0.16.2:libkmod2-25-6.10.1, …), 1121 product×package rows across 166 product lines (Container caasp/v4/cilium, Container caasp/v4/etcd, … (166 product lines)): Fixed 870, Known Affected 154, Known Not Affected 97. | https://www.suse.com/security/cve/CVE-2021-3744/ |
ubuntu
|
low | CVE-2021-3744 low priority: Ubuntu including 168 source packages (linux, linux-allwinner, …), 2116 status rows across 15 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1640, released 221, not-affected 206, ignored 49. | https://ubuntu.com/security/CVE-2021-3744 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | < 5.15 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 5.15 | cpe:2.3:o:linux:linux_kernel:5.15:-:*:*:*:*:*:* |
| linux | linux_kernel | 5.15 | cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 5.15 | cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:* |
| linux | linux_kernel | 5.15 | cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
| fedoraproject | fedora | 35 | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| redhat | build_of_quarkus | 2.0 | cpe:2.3:a:redhat:build_of_quarkus:2.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder | 8.0 | cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_eus | 8.6 | cpe:2.3:a:redhat:codeready_linux_builder_eus:8.6:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian | 8.0 | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:8.0:*:*:*:*:*:*:* |
| redhat | codeready_linux_builder_for_power_little_endian_eus | 8.6 | cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian_eus:8.6:*:*:*:*:*:*:* |
| redhat | developer_tools | 1.0 | cpe:2.3:a:redhat:developer_tools:1.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_ibm_z_systems_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_power_little_endian_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_real_time | 8 | cpe:2.3:o:redhat:enterprise_linux_for_real_time:8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_real_time | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_real_time:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_real_time_for_nfv | 8 | cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv:8:*:*:*:*:*:*:* |
| redhat | enterprise_linux_for_real_time_for_nfv_tus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_for_real_time_for_nfv_tus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_eus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_update_services_for_sap_solutions | 8.6 | cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:* |
| redhat | virtualization_host | 4.0 | cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:* |
| oracle | communications_cloud_native_core_binding_support_function | 22.1.3 | cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:* |
| oracle | communications_cloud_native_core_network_exposure_function | 22.1.1 | cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:* |
| oracle | communications_cloud_native_core_policy | 22.2.0 | cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:* |