In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: Fix wrong check in update_parent_subparts_cpumask() It was found that the check to see if a partition could use up all the cpus from the parent cpuset in update_parent_subparts_cpumask() was incorrect. As a result, it is possible to leave parent with no effective cpu left even if there are tasks in the parent cpuset. This can lead to system panic as reported in [1]. Fix this probem by updating the check to fail the enabling the partition if parent's effective_cpus is a subset of the child's cpus_allowed. Also record the error code when an error happens in update_prstate() and add a test case where parent partition and child have the same cpu list and parent has task. Enabling partition in the child will fail in this case. [1] https://www.spinics.net/lists/cgroups/msg36254.html
総合評価: CVE-2023-52942 は低リスク（24.7/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.18%、8 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 | 0.10% | 0.18% | +0.08% |
| 2 | 2026-05-05 | 0.02% | 0.10% | +0.09% |
| 3 | 2025-03-28 | — | 0.02% | — |
EPSS の全履歴 （全 3 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 |
|---|---|---|---|---|---|---|
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2023-52942 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-2023-52942 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2023-52942 |
suse
|
medium | CVE-2023-52942 severity moderate: SUSE including 26 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 239 product×package rows across 44 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (44 product lines)): Known Not Affected 239. | https://www.suse.com/security/cve/CVE-2023-52942/ |
ubuntu
|
medium | CVE-2023-52942 medium priority: Ubuntu including 130 source packages (linux, linux-allwinner-5.19, …), 1040 status rows across 8 suites (bionic, focal, jammy, noble, oracular, trusty, upstream, xenial): DNE 713, ignored 146, not-affected 117, released 64. | https://ubuntu.com/security/CVE-2023-52942 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 6.1, < 6.1.11 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:* |
| linux | linux_kernel | 6.2 | cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:* |