CVE-2026-99018

A flaw was found in the Linux kernel's RISC-V architecture support. When Shadow Call Stack SCS, a security feature designed to protect function return addresses, is enabled, the kernel incorrectly validates whether an exception originated from userspace using a user-modifiable register. An...

Linux Distros Unpatched Vulnerability : CVE-2026-99018

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp...

DEBIAN-CVE-2026-99018

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

CVE-2026-99018

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

CVE-2026-99018

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

UBUNTU-CVE-2026-99018

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

CVE-2026-99018

The Linux kernel contains a vulnerability under CONFIG_SHADOW_CALL_STACK where the handle_exception() function incorrectly uses the user-writable tp register to determine if a trap originated from userspace. An unprivileged user can manipulate tp to bypass the shadow call stack reload, causing th...

EUVD-2026-108812

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

CVE-2026-99018 riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

CVE-2026-99018 riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

CVE-2026-99018

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIGSHADOWCALLSTACK, handleexception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision with...

PT-2026-121995

In the Linux kernel, the following vulnerability has been resolved: riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp Under CONFIG SHADOW CALL STACK, handle exception reloads the kernel shadow call stack pointer gp only when the trap came from userspace. It made that decision wit...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: sched/scs: The task stack state is reset in bringupcpu. When a CPU is hot-plugged, the idle task on that CPU calls several layers of C code before finally leaving the kernel. When KASAN is in use, a “poisoned” shadow is left behi...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scs: A wrong parameter was fixed in scsmagic. The scsmagic function requires a void variable, but a struct taskstruct is provided instead. taskscstsk represents the starting address of the task’s shadow call stack, and...

USN-8177-1 linux, linux-realtime vulnerabilities

Josh Eads, Kristoffer Janke, Eduardo Vela Nava, Tavis Ormandy, and Matteo Rizzo discovered that some AMD Zen processors did not properly verify the signature of CPU microcode. This flaw is known as EntrySign. A privileged attacker could possibly use this issue to cause load malicious CPU microcod...

SUSE CVE-2025-71102

In the Linux kernel, the following vulnerability has been resolved: scs: fix a wrong parameter in scsmagic scsmagic needs a 'void ' variable, but a 'struct taskstruct ' is given. 'taskscstsk' is the starting address of the task's shadow call stack, and 'scsmagictaskscstsk' is the end address of t...

CVE-2025-71102

In the Linux kernel, the following vulnerability has been resolved: scs: fix a wrong parameter in scsmagic scsmagic needs a 'void ' variable, but a 'struct taskstruct ' is given. 'taskscstsk' is the starting address of the task's shadow call stack, and 'scsmagictaskscstsk' is the end address of t...

UBUNTU-CVE-2025-71102

In the Linux kernel, the following vulnerability has been resolved: scs: fix a wrong parameter in scsmagic scsmagic needs a 'void ' variable, but a 'struct taskstruct ' is given. 'taskscstsk' is the starting address of the task's shadow call stack, and 'scsmagictaskscstsk' is the end address of t...

CVE-2025-71102

In the Linux kernel, the following vulnerability has been resolved: scs: fix a wrong parameter in scsmagic scsmagic needs a 'void ' variable, but a 'struct taskstruct ' is given. 'taskscstsk' is the starting address of the task's shadow call stack, and 'scsmagictaskscstsk' is the end address of t...

CVE-2025-71102

CVE-2025-71102 affects the Linux kernel with a bug in shadow call stack handling: __scs_magic() received a struct task_struct* instead of the required void*. This caused scs_check_usage to scan an incorrect memory range when CONFIG_DEBUG_STACK_USAGE is enabled, potentially yielding inaccurate sha...