USN-8568-1: Linux kernel (OEM) vulnerabilities

It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. CVE-2025-54518 Several security issues...

CVE-2026-64134

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Don't setup bogus ioviter for silencing At transition to the ioviter for PCM data transfer, we blindly applied the ioviter setup also for silencing i.e. data = NULL, and it leads to a calculation of bogus ioviter...

CVE-2026-64082

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset calls cregstoregs unconditionally, even when userregsetcopyin fails. Since cregs is an uninitialized stack variable, a copyin failure causes...

CVE-2026-64082 riscv: Fix register corruption from uninitialized cregs on error

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset calls cregstoregs unconditionally, even when userregsetcopyin fails. Since cregs is an uninitialized stack variable, a copyin failure causes...

CVE-2026-64082 riscv: Fix register corruption from uninitialized cregs on error

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset calls cregstoregs unconditionally, even when userregsetcopyin fails. Since cregs is an uninitialized stack variable, a copyin failure causes...

EUVD-2026-45655

In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset calls cregstoregs unconditionally, even when userregsetcopyin fails. Since cregs is an uninitialized stack variable, a copyin failure causes...

CVE-2026-64082

The CVE-2026-64082 issue affects the Linux kernel on riscv where uninitialized cregs data could be written to a task’s pt_regs during error paths. Specifically, compat_riscv_gpr_set() and compat_restore_sigcontext() call cregs_to_regs() unconditionally, even when user_regset_copyin() or __copy_fr...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-8547-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8547-1 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in...

USN-8547-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - RISC-V architecture; - Cryptographic API; - InfiniBand drivers; - IOMMU subsystem; - Network drivers; -...

TFTP Fetch, Linux dup2 Command Shell, Reverse TCP Stager

Fetch and execute an RISC-V 32-bit payload from a TFTP server. dup2 socket in s1, then execve. Connect back to the attacker Module Options...

TFTP Fetch, Linux dup2 Command Shell, Bind TCP Stager

Fetch and execute an RISC-V 32-bit payload from a TFTP server. dup2 socket in s1, then execve. Listen for a connection Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule include...

HTTPS Fetch, Linux dup2 Command Shell, Bind TCP Stager

Fetch and execute an RISC-V 32-bit payload from an HTTPS server. dup2 socket in s1, then execve. Listen for a connection Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule include...

HTTPS Fetch, Linux dup2 Command Shell, Bind TCP Stager

Fetch and execute an RISC-V 64-bit payload from an HTTPS server. dup2 socket in s1, then execve. Listen for a connection Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule include...

FTP Fetch, Linux Execute Command

Fetch and execute an RISC-V 64-bit payload from an FTP server. Execute an arbitrary command Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule include...

FTP Fetch, Linux dup2 Command Shell, Reverse TCP Stager

Fetch and execute an RISC-V 32-bit payload from an FTP server. dup2 socket in s1, then execve. Connect back to the attacker Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule includ...

FTP Fetch, Linux dup2 Command Shell, Bind TCP Stager

Fetch and execute an RISC-V 32-bit payload from an FTP server. dup2 socket in s1, then execve. Listen for a connection Module Options This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework module MetasploitModule include...

HTTP Fetch, Linux dup2 Command Shell, Reverse TCP Stager

Fetch and execute an RISC-V 32-bit payload from an HTTP server. dup2 socket in s1, then execve. Connect back to the attacker Module Options...

HTTP Fetch, Linux dup2 Command Shell, Bind TCP Stager

Fetch and execute an RISC-V 32-bit payload from an HTTP server. dup2 socket in s1, then execve. Listen for a connection Module Options...

FTP Fetch, Linux Command Shell, Reverse TCP Inline

Fetch and execute an RISC-V 32-bit payload from an FTP server. Connect back to attacker and spawn a command shell. Module Options...

FTP Fetch, Linux Reboot

Fetch and execute an RISC-V 32-bit payload from an FTP 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...