A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.
総合評価: CVE-2020-29661 は中リスク（53.5/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.13%、62 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 | 0.59% | 1.13% | +0.54% |
| 2 | 2026-05-24 | 0.26% | 0.59% | +0.33% |
| 3 | 2026-01-04 | — | 0.26% | — |
EPSS の全履歴 （全 25 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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2020-29661 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-2020-29661 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2020-29661 |
suse
|
high | CVE-2020-29661 severity important: SUSE including 743 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 1276 product×package rows across 117 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-Azure-BYOS, … (117 product lines)): Fixed 1144, Known Affected 129, Known Not Affected 3. | https://www.suse.com/security/cve/CVE-2020-29661/ |
ubuntu
|
high | CVE-2020-29661 high priority: Ubuntu including 169 source packages (linux, linux-allwinner, …), 2181 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1696, not-affected 233, released 214, ignored 38. | https://ubuntu.com/security/CVE-2020-29661 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 2.6.26, < 4.4.248 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.5, < 4.9.248 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.10, < 4.14.212 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.15, < 4.19.163 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.20, < 5.4.83 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.5, < 5.9.14 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 32 | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| 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:*:*:*:*:*:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* |
| broadcom | fabric_operating_system | — | cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:* |
| netapp | solidfire_baseboard_management_controller_firmware | — | cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* |
| netapp | h410c_firmware | — | cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* |
| netapp | a700s_firmware | — | cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:* |
| netapp | 8300_firmware | — | cpe:2.3:o:netapp:8300_firmware:-:*:*:*:*:*:*:* |
| netapp | 8700_firmware | — | cpe:2.3:o:netapp:8700_firmware:-:*:*:*:*:*:*:* |
| netapp | a400_firmware | — | cpe:2.3:o:netapp:a400_firmware:-:*:*:*:*:*:*:* |
| oracle | tekelec_platform_distribution | >= 7.4.0, <= 7.7.1 | cpe:2.3:a:oracle:tekelec_platform_distribution:*:*:*:*:*:*:*:* |