A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
総合評価: CVE-2020-27786 は中リスク（51.9/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 1.66%、74 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 | 7.01% | 1.66% | -5.35% |
| 2 | 2026-06-09 | 6.62% | 7.01% | +0.40% |
| 3 | 2026-06-07 | — | 6.62% | — |
EPSS の全履歴 （全 38 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-2020-27786 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-2020-27786 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2020-27786 |
suse
|
high | CVE-2020-27786 severity important: SUSE including 727 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, …), 1194 product×package rows across 116 product lines (HPE Helion OpenStack 8, Image SLES12-SP5-Azure-BYOS, … (116 product lines)): Fixed 1043, Known Affected 126, Known Not Affected 25. | https://www.suse.com/security/cve/CVE-2020-27786/ |
ubuntu
|
medium | CVE-2020-27786 medium priority: Ubuntu including 115 source packages (linux, linux-aws, …), 1193 status rows across 12 suites (bionic, focal, groovy, hirsute, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 857, not-affected 159, released 155, ignored 21, needed 1. | https://ubuntu.com/security/CVE-2020-27786 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | < 4.4.224 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.5, < 4.9.224 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.10, < 4.14.181 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.15, < 4.19.124 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 4.20, < 5.4.42 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.5, < 5.6.14 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.4 | cpe:2.3:a:redhat:openshift_container_platform:4.4:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.5 | cpe:2.3:a:redhat:openshift_container_platform:4.5:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.6 | cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:* |
| 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_mrg | 2.0 | cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:* |
| netapp | cloud_backup | — | cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* |
| netapp | solidfire_baseboard_management_controller | — | cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.openwall.com/lists/oss-security/2020/12/03/1 | Mailing List |
| https://bugzilla.redhat.com/show_bug.cgi?id=1900933 | Issue Tracking Patch Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1f6e3c818dd734c30f6a7eeebf232ba2cf3181d | Patch Vendor Advisory |
| https://security.netapp.com/advisory/ntap-20210122-0002/ | Third Party Advisory |