The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.
総合評価: CVE-2019-15847 は中リスク(63/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 3.21%、86 パーセンタイル) 根拠: 直近 1 日で EPSS が +2.71% 上昇。悪用への関心が高まっている可能性があります。 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 | 0.49% | 3.21% | +2.71% |
| 2 | 2026-04-12 | 0.74% | 0.49% | -0.25% |
| 3 | 2026-03-28 | — | 0.74% | — |
EPSS の全履歴 (全 18 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2019-15847: 1 source package rows (gcc); 1 state rows across 1 repos (3.11-main); fixed 1, open 0. | https://security.alpinelinux.org/vuln/CVE-2019-15847 |
debian
|
low | CVE-2019-15847 low priority: Debian including 1 source packages (gcc-9), 1 status rows across 1 suites (bullseye): resolved 1. | https://security-tracker.debian.org/tracker/CVE-2019-15847 |
gentoo
|
normal | CVE-2019-15847: 1 GLSA(s) (202409-22), 1 atom(s) (sys-devel/gcc); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-15847 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2019-15847 |
suse
|
medium | CVE-2019-15847 severity moderate: SUSE including 1623 source package names (0.0.17-1.1:libgcc_s1-9.2.1+r275327-1.3.7, 0.0.17-1.1:libstdc++6-9.2.1+r275327-1.3.7, …), 7249 product×package rows across 706 product lines (Container bci/bci-base-fips, Container bci/bci-init, … (706 product lines)): Fixed 5017, Known Not Affected 2001, Known Affected 231. | https://www.suse.com/security/cve/CVE-2019-15847/ |
ubuntu
|
negligible | CVE-2019-15847 negligible priority: Ubuntu including 45 source packages (gcc-10, gcc-3.3, …), 808 status rows across 18 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 518, not-affected 195, ignored 48, needs-triage 39, released 8. | https://ubuntu.com/security/CVE-2019-15847 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| gnu | gcc | < 7.5.0 | cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:* |
| gnu | gcc | >= 8.0, < 8.4.0 | cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:* |
| gnu | gcc | >= 9.0, < 9.3.0 | cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:* |
| gnu | gcc | >= 10.0, < 10.1.0 | cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:* |
| opensuse | leap | 15.0 | cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* |
| opensuse | leap | 15.1 | cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html | Mailing List Third Party Advisory |
| https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481 | Issue Tracking Vendor Advisory |