net/unix/af_unix.c in the Linux kernel 2.6.31.4 and earlier allows local users to cause a denial of service (system hang) by creating an abstract-namespace AF_UNIX listening socket, performing a shutdown operation on this socket, and then performing a series of connect operations to this socket.
総合評価: CVE-2009-3621 は公開エクスプロイトあり(58.1/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.99%、58 パーセンタイル) 根拠: 公開エクスプロイトが 5 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 |
|---|---|---|---|---|
| 10022 | exploit_db | edb | 2009-11-10 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | 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 | 0.06% | 0.99% | +0.92% |
| 2 | 2026-01-23 | 0.04% | 0.06% | +0.02% |
| 3 | 2023-03-07 | — | 0.04% | — |
EPSS の全履歴 (全 4 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] |
| 4.9 | 2.0 | MEDIUM |
|
3.9 | 6.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2009-3621 |
ubuntu
|
low | CVE-2009-3621 low priority: Ubuntu including 2 source packages (linux, linux-source-2.6.15), 12 status rows across 6 suites (dapper, hardy, intrepid, jaunty, karmic, upstream): DNE 5, released 5, needs-triage 2. | https://ubuntu.com/security/CVE-2009-3621 |
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-3621 This issue has been rated as having moderate security impact. It was addressed in Red Hat Enterprise Linux 4, 5 and Red Hat Enterprise MRG via: https://rhn.redhat.com/errata/RHSA-2009-1671.html , https://rhn.redhat.com/errata/RHSA-2009-1670.html and https://rhn.redhat.com/errata/RHSA-2009-1540.html respectively. This issue is not planned to be fixed in Red Hat Enterprise Linux 3, due to this product being in Production 3 of its maintenance life-cycle, where only qualified security errata of important or critical impact are addressed. For further information about Errata Support Policy, visit: http://www.redhat.com/security/updates/errata/
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | <= 2.6.31.4 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 6.06 | cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 8.04 | cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 8.10 | cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 9.04 | cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 9.10 | cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:* |
| fedoraproject | fedora | 10 | cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:* |
| opensuse | opensuse | 11.0 | cpe:2.3:o:opensuse:opensuse:11.0:*:*:*:*:*:*:* |
| opensuse | opensuse | 11.2 | cpe:2.3:o:opensuse:opensuse:11.2:*:*:*:*:*:*:* |
| suse | suse_linux_enterprise_desktop | 10 | cpe:2.3:o:suse:suse_linux_enterprise_desktop:10:sp2:*:*:*:*:*:* |
| suse | suse_linux_enterprise_desktop | 10 | cpe:2.3:o:suse:suse_linux_enterprise_desktop:10:sp3:*:*:*:*:*:* |
| suse | suse_linux_enterprise_server | 10 | cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp2:*:*:*:*:*:* |
| suse | suse_linux_enterprise_server | 10 | cpe:2.3:o:suse:suse_linux_enterprise_server:10:sp3:*:*:*:*:*:* |
| vmware | vma | 4.0 | cpe:2.3:a:vmware:vma:4.0:*:*:*:*:*:*:* |
| vmware | esx | 4.0 | cpe:2.3:o:vmware:esx:4.0:*:*:*:*:*:*:* |