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Ubuntu Linux Kernel PPPoL2TP Use-After-Free Local Privilege Escalation (CVE-2026-68398)
CVE-2026-68398 is a use-after-free race condition between PPPoL2TP receive processing and destruction of a bound-but-unattached PPP channel in the Linux kernel. The PPPoX socket and its embedded pppchannel are RCU-safe, but the internal struct channel used by…
Linux Kernel — SCTPhantom: SCTP ASCONF DEL-IP Use-After-Free Local Privilege Escalation (CVE-2026-64564)
CVE-2026-64564 is a use-after-free vulnerability in the Linux kernel SCTP ASCONF DEL-IP processing. When a multihomed SCTP association processes an ASCONF chunk that deletes an IP address, the associated transport structure is freed but a dangling pointer…
Ivanti Connect Secure / Policy Secure / ZTA Gateways Remote Unauthenticated Stack-Based Buffer Overflow (CVE-2025-22457)
CVE-2025-22457 is a remote, pre-authentication stack-based buffer overflow (CWE-121) in the HTTPS request-handling path of Ivanti Connect Secure and sibling appliances. A single oversized X-Forwarded-For request header overflows a fixed-size stack buffer in…