GHSA-mpxq-89h3-qc47 · 深刻度: critical — Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with...
Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with a repeated fixed string on 32-bit builds. Perl_study_chunk in regcomp_study.c checked the size of the joined substring buffer in characters rather than bytes. For a quantified fixed substring with a large minimum count, the byte length mincount * l could overflow SSize_t, producing an undersized SvGROW allocation; the subsequent copy writes past the end of the buffer. A caller that compiles an attacker-controlled regular expression on a 32-bit perl build triggers a heap buffer overflow at compile time.
総合評価: CVE-2026-8376 は中リスク(50.1/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 0.40%、32 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 | 2026-06-23 | 0.48% | 0.40% | -0.08% |
| 2 | 2026-06-15 | 0.05% | 0.48% | +0.43% |
| 3 | 2026-06-04 | — | 0.05% | — |
EPSS の全履歴 (全 5 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.3 | 3.1 | HIGH |
|
3.9 | 3.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-mpxq-89h3-qc47 · 深刻度: critical — Perl versions through 5.43.10 have a heap buffer overflow when compiling regular expressions with...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-8376 not yet assigned priority: Debian including 1 source packages (perl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2026-8376 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2026-8376/ |
ubuntu
|
medium | CVE-2026-8376 medium priority: Ubuntu including 1 source packages (perl), 9 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): needs-triage 9. | https://ubuntu.com/security/CVE-2026-8376 |
| URL | タグ |
|---|---|
| https://github.com/Perl/perl5/commit/5e7f119eb2bb1181be908701f22bf7068e722f1c.patch | Patch |
| http://www.openwall.com/lists/oss-security/2026/05/26/1 | Mailing List Third Party Advisory |