CVE-2026-23194
HighSummary
W jądrze systemu Linux naprawiono podatność związaną z obiektami FDA o długości zero, które mogły powodować błąd przekroczenia granic pamięci. Poprzednia implementacja błędnie interpretowała wartość `skip == 0`, co prowadziło do prób zapisu poza przydzieloną pamięcią.
Risk Assessment
Wykorzystanie tej podatności mogło prowadzić do awarii aplikacji lub nieautoryzowanego dostępu do pamięci, co stwarzało zagrożenie dla stabilności i bezpieczeństwa systemu.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, aby usunąć tę podatność oraz monitorowanie systemu pod kątem potencjalnych nieprawidłowości związanych z obsługą FDA.
Related vulnerabilities
- CVE-2026-93467Critical
The OAKlouds developed by HGiga has an Insecure Deserialization vulnerability. Unauthenticated remote attackers can execute arbitrary code on the server by sending maliciously crafted serialized content.
- CVE-2026-85878Critical
Improper authorization in Azure Database for PostgreSQL allows an authorized attacker to elevate privileges over a network.
- CVE-2026-69843Critical
Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-62874Critical
Insufficient verification of data authenticity in Azure Billing allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-87886HighActively exploited
The vulnerability is a local privilege escalation due to insecure file permissions. It affects Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Backup extension for Plesk (Linux) before build 1.8.11.638, and Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.3.238.
- CVE-2026-87701Critical
Improper neutralization of special elements in output used by a downstream component ('injection') in Azure Cosmos DB allows an authorized attacker to elevate privileges over a network.
- CVE-2026-85889Critical
Missing authentication for a critical function in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-85885Critical
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an authorized attacker to elevate privileges over a network.
- CVE-2026-83944Critical
Improper access control in Azure Logic Apps allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-77903Critical
Authentication bypass by spoofing in Microsoft Dataverse allows an unauthorized attacker to elevate privileges over a network.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: rust_binder: correctly handle FDA objects of length zero Fix a bug where an empty FDA (fd array) object with 0 fds would cause an out-of-bounds error. The previous implementation used `skip == 0` to mean "this is a pointer fixup", but 0 is also the correct skip length for an empty FDA. If the FDA is at the end of the buffer, then this results in an attempt to write 8-bytes out of bounds. This is caught and results in an EINVAL error being returned to userspace. The pattern of using `skip == 0` as a special value originates from the C-implementation of Binder. As part of fixing this bug, this pattern is replaced with a Rust enum. I considered the alternate option of not pushing a fixup when the length is zero, but I think it's cleaner to just get rid of the zero-is-special stuff. The root cause of this bug was diagnosed by Gemini CLI on first try. I used the following prompt: > There appears to be a bug in @driver