CVE-2025-71203

In the Linux kernel, the following vulnerability has been resolved: riscv: Sanitize syscall table indexing under speculation The syscall number is a user-controlled value used to index into the syscall table. Use arrayindexnospec to clamp this value after the bounds check to prevent speculative...

CVE-2025-71203

In the Linux kernel, the following vulnerability has been resolved: riscv: Sanitize syscall table indexing under speculation The syscall number is a user-controlled value used to index into the syscall table. Use arrayindexnospec to clamp this value after the bounds check to prevent speculative...

CVE-2025-71203 riscv: Sanitize syscall table indexing under speculation

In the Linux kernel, the following vulnerability has been resolved: riscv: Sanitize syscall table indexing under speculation The syscall number is a user-controlled value used to index into the syscall table. Use arrayindexnospec to clamp this value after the bounds check to prevent speculative...

Sleep Reveals the Nonce: Breaking ECDSA Using Sleep-Based Power Side-Channel Vulnerability

Security of Elliptic Curve Digital Signature Algorithm ECDSA depends on the secrecy of the per-signature nonce. Even partial nonce leakage can expose the long-term private key through lattice-based cryptanalysis. In this paper, we introduce a previously unexplored power side-channel vulnerability...

Azure Linux 3.0 Security Update: kernel (CVE-2024-42140)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-42140 advisory. - In the Linux kernel, the following vulnerability has been resolved: riscv: kexec: Avoid deadlock in kexec...

Azure Linux 3.0 Security Update: kernel (CVE-2024-38667)

The version of kernel installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-38667 advisory. - In the Linux kernel, the following vulnerability has been resolved: riscv: prevent ptregs corruption for...

SimFuzz: Similarity-Guided Block-Level Mutation for RISC-V Processor Fuzzing

The Instruction Set Architecture ISA defines processor operations and serves as the interface between hardware and software. As an open ISA, RISC-V lowers the barriers to processor design and encourages widespread adoption, but also exposes processors to security risks such as functional bugs...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: RISCV: Stacktrace: Disabling KASAN checks for non-current tasks. When unwinding the stack of a task other than the current one, KASAN will report “BUG: KASAN: out-of-bounds access in walkstackframe+0x41c/0x460”. This same issue...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: riscv, bpf: Sign extension for struct ops correctly handles return values. The nsbpfqdisc selftest triggers a kernel panic: Unable to handle kernel paging request at virtual address ffffffffa38dbf58. Current testprogs pgtable:...

Metasploit Wrap-Up 01/09/2026

RISC-V Payloads This week brings more RISC-V payloads from community member bcoles. One provides a new adapter which allows RISC-V payloads to be converted to commands and delivered as a Metasploit fetch-payload. The second is a classic bind shell, offering the user interactive connectivity to th...

Linux Command Shell, Bind TCP Inline

Listen for a connection and spawn a command shell Module Options msf use payload/linux/riscv32le/shellbindtcp msf payloadshellbindtcp show actions ...actions... msf payloadshellbindtcp set ACTION msf payloadshellbindtcp show options ...show and set options... msf payloadshellbindtcp run This modu...

HTTPS Fetch, Linux Execute Command

Fetch and execute an RISC-V 32-bit payload from an HTTPS server. Execute an arbitrary command Module Options msf use payload/cmd/linux/https/riscv32le/exec msf payloadexec show actions ...actions... msf payloadexec set ACTION msf payloadexec show options ...show and set options... msf payloadexec...

HTTP Fetch, Linux Chmod

Fetch and execute an RISC-V 32-bit payload from an HTTP server. Runs chmod on the specified file with specified mode. Module Options msf use payload/cmd/linux/http/riscv32le/chmod msf payloadchmod show actions ...actions... msf payloadchmod set ACTION msf payloadchmod show options ...show and set...

TFTP Fetch, Linux Command Shell, Bind TCP Inline

Fetch and execute an RISC-V 64-bit payload from a TFTP server. Listen for a connection and spawn a command shell Module Options msf use payload/cmd/linux/tftp/riscv64le/shellbindtcp msf payloadshellbindtcp show actions ...actions... msf payloadshellbindtcp set ACTION msf payloadshellbindtcp show...

HTTP Fetch, Linux Reboot

Fetch and execute an RISC-V 64-bit payload from an HTTP server. A very small shellcode for rebooting the system using the reboot syscall. This payload is sometimes helpful for testing purposes. Requires CAPSYSBOOT privileges. Module Options msf use payload/cmd/linux/http/riscv64le/reboot msf...

HTTP Fetch, Linux Chmod

Fetch and execute an RISC-V 64-bit payload from an HTTP server. Runs chmod on the specified file with specified mode. Module Options msf use payload/cmd/linux/http/riscv64le/chmod msf payloadchmod show actions ...actions... msf payloadchmod set ACTION msf payloadchmod show options ...show and set...

HTTPS Fetch, Linux Execute Command

Fetch and execute an RISC-V 64-bit payload from an HTTPS server. Execute an arbitrary command Module Options msf use payload/cmd/linux/https/riscv64le/exec msf payloadexec show actions ...actions... msf payloadexec set ACTION msf payloadexec show options ...show and set options... msf payloadexec...

HTTP Fetch, Linux Execute Command

Fetch and execute an RISC-V 64-bit payload from an HTTP server. Execute an arbitrary command Module Options msf use payload/cmd/linux/http/riscv64le/exec msf payloadexec show actions ...actions... msf payloadexec set ACTION msf payloadexec show options ...show and set options... msf payloadexec r...

HTTPS Fetch, Linux Command Shell, Bind TCP Inline

Fetch and execute an RISC-V 32-bit payload from an HTTPS server. Listen for a connection and spawn a command shell Module Options msf use payload/cmd/linux/https/riscv32le/shellbindtcp msf payloadshellbindtcp show actions ...actions... msf payloadshellbindtcp set ACTION msf payloadshellbindtcp sh...

HTTPS Fetch, Linux Reboot

Fetch and execute an RISC-V 32-bit payload from an HTTPS server. A very small shellcode for rebooting the system using the reboot syscall. This payload is sometimes helpful for testing purposes. Requires CAPSYSBOOT privileges. Module Options msf use payload/cmd/linux/https/riscv32le/reboot msf...