In the Linux kernel, the following vulnerability has been resolved: s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex Reservation of the PMU hardware is done at first event creation and is protected by a pair of mutex_lock() and mutex_unlock(). After reservation of the PMU hardware the memory required for the PMUs the event is to be installed on is allocated by allocate_buffers() and alloc_sampling_buffer(). This done outside of the mutex protection. Without mutex protection two or more concurrent invocations of perf_event_init() may run in parallel. This can lead to allocation of Sample Data Blocks (SDBs) multiple times for the same PMU. Prevent this and protect memory allocation of SDBs by mutex.
総合評価: CVE-2024-56706 は低リスク(27.2/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.16%、5 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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。
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% | 0.16% | +0.12% |
| 2 | 2024-12-29 | — | 0.04% | — |
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 |
|---|---|---|---|---|---|---|
| 6.3 | 3.1 | MEDIUM |
|
1.0 | 5.2 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2024-56706 unimportant 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-2024-56706 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2024-56706 |
suse
|
medium | CVE-2024-56706 severity moderate: SUSE including 52 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 331 product×package rows across 58 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Availability Extension 12 SP5, … (58 product lines)): Known Not Affected 305, Fixed 26. | https://www.suse.com/security/cve/CVE-2024-56706/ |
ubuntu
|
medium | CVE-2024-56706 medium priority: Ubuntu including 126 source packages (linux, linux-allwinner-5.19, …), 1008 status rows across 8 suites (bionic, focal, jammy, noble, oracular, trusty, upstream, xenial): DNE 690, ignored 146, not-affected 113, released 59. | https://ubuntu.com/security/CVE-2024-56706 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.12, < 6.12.2 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |