CVE-2026-23371
MediumCVSS 5.5Summary
W jądrze Linuxa zidentyfikowano podatność związaną z niewłaściwym dziedziczeniem parametrów przez zadania SCHED_DEADLINE podczas zmiany priorytetu. Problem ten może prowadzić do błędów w obliczaniu pasma, gdy zadanie nie jest poprawnie oznaczane jako wzmocnione.
Risk Assessment
Organizacje mogą doświadczyć problemów z wydajnością systemu oraz błędów w zarządzaniu zasobami, co może prowadzić do niestabilności aplikacji działających na systemie czasu rzeczywistego.
Recommendation
Zaleca się aktualizację jądra Linux do najnowszej wersji, aby załatać tę podatność i zapewnić prawidłowe zarządzanie zadaniami SCHED_DEADLINE.
Related vulnerabilities
- CVE-2026-108269Critical
In versions prior to 0.5.0 of Remote Attestation TLS Clients for Rust and Go, RA-TLS challenge verifiers accepted quotes bound to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing clients to accept an attacker-terminated connection as the attested enclave. This issue is fixed in 0.5.0.
- CVE-2026-108268Critical
In versions prior to tdx-v0.2.43 and tdx-gpu-v0.6.27, Enclave OS Virtual placed the certificate public-key hash and client nonce in quote ReportData but omitted a value bound to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave. This issue is fixed in tdx-v0.2.43 and tdx-gpu-v0.6.27.
- CVE-2026-108267Critical
In versions prior to privasys-v0.5.1-go1.26.5, Privasys Go (a fork of Go with RA-TLS support) in challenge mode bound quote ReportData to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept a handshake terminated by the attacker as an attested enclave connection. This issue is fixed in privasys-v0.5.1-go1.26.5.
- CVE-2026-108266Critical
In versions prior to privasys-v0.8.1, Privasys rustls (a fork of the rustls TLS library with RA-TLS support) emitted RA-TLS challenge certificates whose quote ReportData was bound to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave. This issue is fixed in privasys-v0.8.1.
- CVE-2026-108265Critical
In versions prior to wasm-v0.40.0, Enclave OS Mini (a Rust-based runtime for confidential applications inside Intel SGX enclaves) in the RA-TLS challenge certificate path placed the certificate public-key hash and client nonce in quote ReportData but omitted a value bound to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept an attacker-terminated connection as the attested enclave. This issue is fixed in wasm-v0.40.0.
- CVE-2026-108264Critical
In versions prior to 2026.9.1, Wizarr (an advanced user invitation and management system for media servers) evaluated wizard step Markdown in the application's non-sandboxed Jinja2 environment with application globals exposed. An authenticated user able to create steps, or an administrator importing an untrusted bundle through POST /settings/wizard/import, could execute arbitrary Python when rendering the stored step, potentially leading to OS command execution, disclosure of the Flask SECRET_KEY, access to connected service credentials and the database, and stored cross-site scripting. This issue is fixed in 2026.9.1.
- CVE-2026-108263Critical
In versions prior to 1.1.2, Astron Agent (an agentic workflow platform for building and running AI agents) selected LocalExecutor in the default workflow code-node path, which supplies complete Python builtins to dynamic code execution without the documented sandbox restrictions. An authenticated low-privilege tenant can execute code as root in the core-workflow container and use shared service and database credentials to bypass application-level tenant checks, read or modify other tenants' data, and disrupt shared services. This issue is fixed in version 1.1.2.
- CVE-2026-108261Critical
In versions prior to tinacms 3.14.0 and @tinacms/app 2.5.14, the /~/* admin preview route in Tina (a headless CMS) can turn an attacker-controlled hash-router splat into an off-origin iframe URL, while expectedOrigin for the GraphQL message channel is derived from that same URL. An unauthenticated attacker can send a crafted link to a signed-in editor, cause the admin to frame an attacker origin, and have that frame treated as the trusted preview, allowing GraphQL reads or mutations with the editor's credentials. This issue is fixed in tinacms 3.14.0 and @tinacms/app 2.5.14.
- CVE-2026-107845Critical
In versions from 4.0.0 until 5.3.50 and 5.7.12, Contao (an Open Source CMS) renders comment email or website metadata without sufficient attribute and URL encoding in listComments(). An unauthenticated visitor can submit a comment with malicious script that executes in the backend context when a user opens the Comments module. This issue is fixed in versions 5.3.50 and 5.7.12.
- CVE-2026-107824Critical
In versions prior to 1.1, x64dbg-MCP Server (a native MCP plugin for x64dbg) exposes all MCP debugger tools over HTTP and SSE without authentication while listening on 0.0.0.0 by default. Any unauthenticated network client that can reach the default port (9094 for x64, 9095 for x32) can execute arbitrary x64dbg commands, attach to processes by PID, read and write debuggee memory, and write files to arbitrary paths. This issue is fixed in version 1.1.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: sched/deadline: Fix missing ENQUEUE_REPLENISH during PI de-boosting Running stress-ng --schedpolicy 0 on an RT kernel on a big machine might lead to the following WARNINGs (edited). sched: DL de-boosted task PID 22725: REPLENISH flag missing WARNING: CPU: 93 PID: 0 at kernel/sched/deadline.c:239 dequeue_task_dl+0x15c/0x1f8 ... (running_bw underflow) Call trace: dequeue_task_dl+0x15c/0x1f8 (P) dequeue_task+0x80/0x168 deactivate_task+0x24/0x50 push_dl_task+0x264/0x2e0 dl_task_timer+0x1b0/0x228 __hrtimer_run_queues+0x188/0x378 hrtimer_interrupt+0xfc/0x260 ... The problem is that when a SCHED_DEADLINE task (lock holder) is changed to a lower priority class via sched_setscheduler(), it may fail to properly inherit the parameters of potential DEADLINE donors if it didn't already inherit them in the past (shorter deadline than donor's at that time). This might lead to bandwidth accounting corruption, as enqueue_task_dl() won't recognize the lock holder as boosted. The scenario occurs when: 1. A DEADLINE task (donor) blocks on a PI mutex held by another DEADLINE task (holder), but the holder doesn't inherit parameters (e.g., it already has a shorter deadline) 2. sched_setscheduler() changes the holder from DEADLINE to a lower class while still holding the mutex 3. The holder should now inherit DEADLINE parameters from the donor and be enqueued with ENQUEUE_REPLENISH, but this doesn't happen Fix the issue by introducing __setscheduler_dl_pi(), which detects when a DEADLINE (proper or boosted) task gets setscheduled to a lower priority class. In case, the function makes the task inherit DEADLINE parameters of the donoer (pi_se) and sets ENQUEUE_REPLENISH flag to ensure proper bandwidth accounting during the next enqueue operation.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

