GHSA-3584-5r39-4gm3 · 深刻度： medium — Calling NSS-backed functions that support caching via nscd may call the nscd client side code...
Calling NSS-backed functions that support caching via nscd may call the nscd client side code and in the GNU C Library version 2.36 under high load on x86_64 systems, the client may call memcmp on inputs that are concurrently modified by other processes or threads and crash. The nscd client in the GNU C Library uses the memcmp function with inputs that may be concurrently modified by another thread, potentially resulting in spurious cache misses, which in itself is not a security issue. However in the GNU C Library version 2.36 an optimized implementation of memcmp was introduced for x86_64 which could crash when invoked with such undefined behaviour, turning this into a potential crash of the nscd client and the application that uses it. This implementation was backported to the 2.35 branch, making the nscd client in that branch vulnerable as well. Subsequently, the fix for this issue was backported to all vulnerable branches in the GNU C Library repository. It is advised that distributions that may have cherry-picked the memcpy SSE2 optimization in their copy of the GNU C Library, also apply the fix to avoid the potential crash in the nscd client.
総合評価: CVE-2026-3904 は公開エクスプロイトあり（50/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.15%、4 パーセンタイル） 根拠: 公開エクスプロイトが 1 件参照されています（Exploit-DB）。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 0.01% | 0.15% | +0.13% |
| 2 | 2026-03-12 | — | 0.01% | — |
EPSS の全履歴 （全 2 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 |
|---|---|---|---|---|---|---|
| 6.2 | 3.1 | MEDIUM |
|
2.5 | 3.6 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-3584-5r39-4gm3 · 深刻度： medium — Calling NSS-backed functions that support caching via nscd may call the nscd client side code...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-3904 unimportant priority: Debian including 1 source packages (glibc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-3904 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-3904 |
suse
|
medium | CVE-2026-3904 severity moderate: SUSE including 17 source package names (glibc, glibc-32bit, …), 175 product×package rows across 20 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (20 product lines)): Known Not Affected 175. | https://www.suse.com/security/cve/CVE-2026-3904/ |
ubuntu
|
medium | CVE-2026-3904 medium priority: Ubuntu including 2 source packages (eglibc, glibc), 12 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): not-affected 7, DNE 3, needs-triage 2. | https://ubuntu.com/security/CVE-2026-3904 |