CVE-2026-23354
HighSummary
W jądrze Linuxa rozwiązano podatność związaną z niewłaściwym użyciem funkcji array_index_nospec() w kontekście spekulacyjnego bezpieczeństwa. Problem dotyczy sytuacji, w której wartość uznawana za bezpieczną może być narażona na przewidywania pamięci, co prowadzi do potencjalnych luk w zabezpieczeniach.
Risk Assessment
Organizacje mogą być narażone na ataki wykorzystujące przewidywania pamięci, co może prowadzić do nieautoryzowanego dostępu do danych lub wykonania złośliwego kodu. Właściwe zabezpieczenie tej podatności jest kluczowe dla ochrony integralności systemu.
Recommendation
Zaleca się aktualizację jądra Linux do najnowszej wersji, w której wprowadzono poprawki dotyczące tej podatności. Należy również przeprowadzić audyt kodu, aby upewnić się, że funkcja array_index_nospec() jest używana prawidłowo w kontekście dostępu do tablic.
Related vulnerabilities
- CVE-2026-60043Critical
An unauthenticated remote attacker can perform an XSS attack on a logged-in backend user, allowing execution of multiple critical system actions such as shutting down the server or restoring an uploaded backup.
- CVE-2026-13312Critical
The described vulnerability could allow an attacker to compromise a system. Technical details are not provided in the description.
- CVE-2026-115646Critical
A partial string comparison vulnerability in HiRDB. The issue affects HiRDB Server Version 10 (from 10-00 before 10-12-01) and Version 9 (from 09-50-06 through 09-66-22), including versions with additional functions.
- CVE-2026-89126Critical
SAP Web Dispatcher does not sufficiently validate certain network input processed by an internal component. An unauthenticated attacker could send specially crafted network traffic to trigger memory corruption, potentially leading to arbitrary code execution and full system compromise.
- CVE-2026-89119Critical
SAP Web Dispatcher and SAP NetWeaver Application Server ABAP (Internet Communication Manager) do not perform sufficient request validation in certain administrative functionality. An unauthenticated attacker could trick a logged-on administrator into visiting a malicious link, causing unintended actions in the administrator's session and potentially leading to full compromise of the underlying operating system.
- CVE-2026-89103Critical
SAP Gateway activates the default Access Control List with high privileges, allowing categorization of an external attacker as an internal application server. An unauthenticated attacker with network access to SAP Gateway could exploit this weakness to perform unauthorized actions within the application environment.
- CVE-2026-76965Critical
SAP NetWeaver Application Server ABAP and ABAP Platform do not perform necessary authorization checks for certain internal functionality. An attacker with low privileges could invoke the affected functionality to execute arbitrary operating system commands on the underlying host.
- CVE-2026-76964Critical
SAP NetWeaver Application Server ABAP does not sufficiently validate certain network input processed by an internal component. An unauthenticated attacker could send specially crafted network traffic to trigger memory corruption, potentially leading to arbitrary code execution and full system compromise.
- CVE-2026-125086Critical
D-Link M60 1.12.B01 contains hard-coded credentials in the /etc/emDaemon/mosquitto.conf file of the emDaemon MQTT Broker component. The vulnerability can be exploited remotely, and a public exploit may already be in use.
- CVE-2026-124600Critical
GV-Face transmits sensitive user credentials and related authentication data over unencrypted HTTP connections. The HTTP traffic is not encrypted, allowing an attacker to intercept it.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: x86/fred: Correct speculative safety in fred_extint() array_index_nospec() is no use if the result gets spilled to the stack, as it makes the believed safe-under-speculation value subject to memory predictions. For all practical purposes, this means array_index_nospec() must be used in the expression that accesses the array. As the code currently stands, it's the wrong side of irqentry_enter(), and 'index' is put into %ebp across the function call. Remove the index variable and reposition array_index_nospec(), so it's calculated immediately before the array access.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS