kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.
総合評価: CVE-2018-1087 は中リスク（50.5/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.77%、51 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 | 0.04% | 0.77% | +0.73% |
| 2 | 2025-11-21 | 0.07% | 0.04% | -0.03% |
| 3 | 2025-11-18 | — | 0.07% | — |
EPSS の全履歴 （全 12 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 |
|---|---|---|---|---|---|---|
| 8.0 | 3.0 | HIGH |
|
2.1 | 5.9 | [email protected] |
| 7.8 | 3.0 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 4.6 | 2.0 | MEDIUM |
|
3.9 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2018-1087 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-2018-1087 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2018-1087 |
suse
|
high | CVE-2018-1087 severity important: SUSE including 140 source package names (kernel-3.10.0-862.2.3.el7, kernel-abi-whitelists-3.10.0-862.2.3.el7, …), 511 product×package rows across 57 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 4, … (57 product lines)): Known Not Affected 265, Fixed 246. | https://www.suse.com/security/cve/CVE-2018-1087/ |
ubuntu
|
high | CVE-2018-1087 high priority: Ubuntu including 76 source packages (linux, linux-aws, …), 610 status rows across 10 suites (artful, bionic, cosmic, focal, jammy, noble, oracular, trusty, upstream, xenial): DNE 388, not-affected 123, released 90, ignored 9. | https://ubuntu.com/security/CVE-2018-1087 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | 4.16 | cpe:2.3:o:linux:linux_kernel:4.16:*:*:*:*:*:*:* |
| linux | linux_kernel | 4.16 | cpe:2.3:o:linux:linux_kernel:4.16:rc7:*:*:*:*:*:* |
| linux | linux_kernel | 4.17 | cpe:2.3:o:linux:linux_kernel:4.17:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 4.17 | cpe:2.3:o:linux:linux_kernel:4.17:rc2:*:*:*:*:*:* |
| linux | linux_kernel | 4.17 | cpe:2.3:o:linux:linux_kernel:4.17:rc3:*:*:*:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 17.10 | cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.5 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 7.2 | cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_virtualization | 4.0 | cpe:2.3:o:redhat:enterprise_linux_virtualization:4.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://www.openwall.com/lists/oss-security/2018/05/08/5 | Mailing List |
| http://www.securityfocus.com/bid/104127 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1040862 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2018:1318 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:1345 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:1347 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:1348 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:1355 | Third Party Advisory |
| https://access.redhat.com/errata/RHSA-2018:1524 | Third Party Advisory |
| https://access.redhat.com/security/vulnerabilities/pop_ss | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1087 | Issue Tracking |
| https://usn.ubuntu.com/3641-1/ | Third Party Advisory |
| https://usn.ubuntu.com/3641-2/ | Third Party Advisory |
| https://www.debian.org/security/2018/dsa-4196 | Third Party Advisory |