GHSA-22m3-g27g-5h2v · 深刻度： unknown — In the Linux kernel, the following vulnerability has been resolved: net/smc: fix sleep-inside...
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix sleep-inside-lock in __smc_setsockopt() causing local DoS A logic flaw in __smc_setsockopt() allows a local unprivileged user to cause a Denial of Service (DoS) by holding the socket lock indefinitely. The function __smc_setsockopt() calls copy_from_sockptr() while holding lock_sock(sk). By passing a userfaultfd-monitored memory page (or FUSE-backed memory on systems where unprivileged userfaultfd is disabled) as the optval, an attacker can halt execution during the copy operation, keeping the lock held. Combined with asynchronous tear-down operations like shutdown(), this exhausts the kernel wq (kworkers) and triggers the hung task watchdog. [ 240.123456] INFO: task kworker/u8:2 blocked for more than 120 seconds. [ 240.123489] Call Trace: [ 240.123501] smc_shutdown+... [ 240.123512] lock_sock_nested+... This patch moves the user-space copy outside the lock_sock() critical section to prevent the issue.
総合評価: CVE-2026-53274 は低リスク（7.8/100）。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: 総合リスクは低く緊急対応は不要です。通常の保守サイクルでパッチを適用し、CVSS / EPSS が上昇したら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 | 2026-06-25 | — | 0.18% | — |
EPSS の全履歴 （全 1 件）
この CVE の CVSS 指標。
この CVE のデータセットに CVSS はありません。
GHSA-22m3-g27g-5h2v · 深刻度： unknown — In the Linux kernel, the following vulnerability has been resolved: net/smc: fix sleep-inside...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-53274 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. | https://security-tracker.debian.org/tracker/CVE-2026-53274 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2026-53274 |
suse
|
medium | CVE-2026-53274 severity moderate: SUSE including 18 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 87 product×package rows across 19 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise Live Patching 12 SP5, … (19 product lines)): Known Not Affected 87. | https://www.suse.com/security/cve/CVE-2026-53274/ |
ubuntu
|
medium | CVE-2026-53274 medium priority: Ubuntu including 161 source packages (linux, linux-allwinner-5.19, …), 1449 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1044, ignored 172, released 87, not-affected 79, needed 66, needs-triage 1. | https://ubuntu.com/security/CVE-2026-53274 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linux | linux_kernel | >= 5.18, < 6.1.176 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.18, < 6.6.143 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.18, < 6.12.94 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.18, < 6.18.36 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.18, < 7.0.13 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| linux | linux_kernel | >= 5.18, < 7.1 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |