CVE-2025-38670

CVE-2025-38670 affects ARM64 Linux kernel. The vulnerability arises in cpu_switch_to() and call_on_irq_stack() where masking and saving the DAIF state and SCS pointers are not atomic across stack switches, allowing a race during task/IRQ stack transitions. Interrupts (SErrors/Debug Exceptions) ca...

CVE-2025-38670

In the Linux kernel, the following vulnerability has been resolved: arm64/entry: Mask DAIF in cpuswitchto, callonirqstack cpuswitchto and callonirqstack manipulate SP to change to different stacks along with the Shadow Call Stack if it is enabled. Those two stack changes cannot be done atomically...

CVE-2025-38670 arm64/entry: Mask DAIF in cpu_switch_to(), call_on_irq_stack()

In the Linux kernel, the following vulnerability has been resolved: arm64/entry: Mask DAIF in cpuswitchto, callonirqstack cpuswitchto and callonirqstack manipulate SP to change to different stacks along with the Shadow Call Stack if it is enabled. Those two stack changes cannot be done atomically...

Linux Distros Unpatched Vulnerability : CVE-2021-47553

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that C...

New Malware Loaders Use Call Stack Spoofing, GitHub C2, and .NET Reactor for Stealth

Cybersecurity researchers have discovered an updated version of a malware loader called Hijack Loader that implements new features to evade detection and establish persistence on compromised systems. "Hijack Loader released a new module that implements call stack spoofing to hide the origin of...

PT-2026-2863

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel related to the scs magic function within the shadow call stack SCS implementation. The function requires a 'void ' variable but receives a 'struct task...

PT-2025-34431

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The Linux kernel contains a flaw in the cpu switch to and call on irq stack functions related to stack manipulation and the Shadow Call Stack. Interruptions during stack changes can le...

CVE-2024-46789

In the Linux kernel, the following vulnerability has been resolved: mm/slub: add check for s-flags in the alloctaggingslabfreehook When enable CONFIGMEMCG & CONFIGKFENCE & CONFIGKMEMLEAK, the following warning always occurs,This is because the following call stack occurred: mempoolalloc...

CVE-2024-46789 mm/slub: add check for s->flags in the alloc_tagging_slab_free_hook

In the Linux kernel, the following vulnerability has been resolved: mm/slub: add check for s-flags in the alloctaggingslabfreehook When enable CONFIGMEMCG & CONFIGKFENCE & CONFIGKMEMLEAK, the following warning always occurs,This is because the following call stack occurred: mempoolalloc...

CVE-2024-46789

CVE-2024-46789 (Linux kernel) details from connected documents show a concrete fix: in mm/slub, the tagging logic now checks s->flags in alloc_tagging_slab_free_hook to avoid calling alloc_tag_add when SLAB_NO_OBJ_EXT or SLAB_NOLEAKTRACE are set. This prevents the NULL ref (ref->ct) and the...

BokuLoader - A Proof-Of-Concept Cobalt Strike Reflective Loader Which Aims To Recreate, Integrate, And Enhance Cobalt Strike's Evasion Features!

A proof-of-concept User-Defined Reflective Loader UDRL which aims to recreate, integrate, and enhance Cobalt Strike's evasion features! Contributors: Contributor | Twitter | Notable Contributions ---|---|--- Bobby Cooke | @0xBoku | Project original author and maintainer Santiago Pecin | @s4ntiago...

CVE-2024-36930 spi: fix null pointer dereference within spi_sync

In the Linux kernel, the following vulnerability has been resolved: spi: fix null pointer dereference within spisync If spisync is called with the non-empty queue and the same spimessage is then reused, the complete callback for the message remains set while the context is cleared, leading to a...

SUSE CVE-2021-47553

In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that CPU calls a few layers of C code before finally leaving the kernel. When KASAN is in use, poisoned shadow is left around for each of the...

CVE-2021-47553

In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that CPU calls a few layers of C code before finally leaving the kernel. When KASAN is in use, poisoned shadow is left around for each of the...

CVE-2021-47553

In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that CPU calls a few layers of C code before finally leaving the kernel. When KASAN is in use, poisoned shadow is left around for each of the...

DEBIAN-CVE-2021-47553

In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that CPU calls a few layers of C code before finally leaving the kernel. When KASAN is in use, poisoned shadow is left around for each of the...

CVE-2021-47553

In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that CPU calls a few layers of C code before finally leaving the kernel. When KASAN is in use, poisoned shadow is left around for each of the...

UBUNTU-CVE-2021-47553

In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that CPU calls a few layers of C code before finally leaving the kernel. When KASAN is in use, poisoned shadow is left around for each of the...

CVE-2021-47553 sched/scs: Reset task stack state in bringup_cpu()

In the Linux kernel, the following vulnerability has been resolved: sched/scs: Reset task stack state in bringupcpu To hot unplug a CPU, the idle task on that CPU calls a few layers of C code before finally leaving the kernel. When KASAN is in use, poisoned shadow is left around for each of the...

CVE-2021-47553

The CVE describes a Linux kernel issue (CVE-2021-47553) in the SCS and KASAN shadow stack handling for the idle task during CPU hotplug (bringup_cpu). When a CPU is offline and brought back online, stale KASAN shadow and stale shadow call stack (SCS) state could lead to bogus warnings or leak por...