UBUNTU-CVE-2025-37948

In the Linux kernel, the following vulnerability has been resolved: arm64: bpf: Add BHB mitigation to the epilogue for cBPF programs A malicious BPF program may manipulate the branch history to influence what the hardware speculates will happen next. On exit from a BPF program, emit the BHB...

Alibaba Cloud Linux 3 : 0042: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0042)

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2023:0042 advisory. Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities: CVE-2021-33061: Insufficient control flow...

kernel: gpio: prevent potential speculation leaks in gpio_device_get_desc()

In the Linux kernel, the following vulnerability has been resolved: gpio: prevent potential speculation leaks in gpiodevicegetdesc Userspace may trigger a speculative read of an address outside the gpio descriptor array. Users can do that by calling gpioioctl with an offset out of range. Offset i...

kernel: protect the fetch of ->fd[fd] in do_dup2() from mispredictions

In the Linux kernel, the following vulnerability has been resolved: protect the fetch of -fdfd in dodup2 from mispredictions both callers have verified that fd is not greater than -maxfds; however, misprediction might end up with tofree = fdt-fdfd; being speculatively executed. That's wrong for t...

Kudzu: Fast and Simple High-Throughput BFT

We present Kudzu, a high-throughput atomic broadcast protocol with an integrated fast path. Our contribution is based on the combination of two lines of work. Firstly, our protocol achieves finality in just two rounds of communication if all but $p$ out of $n = 3f + 2p + 1$ participating replicas...

x86: Indirect Target Selection

ISSUE DESCRIPTION Researchers at VU Amsterdam have released Training Solo, detailing several speculative attacks which bypass current protections. One issue, which Intel have named Indirect Target Selection, is a bug in the hardware support for prediction-domain isolation. The mitigation for this...

curl: Speculative Execution Side-Channel in `curl`

🛡️ Penetration Testing Report ========== Speculative Execution Side-Channel in curl Date: May 2025 --- 🧭 Executive Summary This report outlines a speculative execution side-channel vulnerability found in curl versions 7.12.0 to 8.9.0, specifically within builds supporting experimental QUIC...

UBUNTU-CVE-2022-49788

In the Linux kernel, the following vulnerability has been resolved: misc/vmwvmci: fix an infoleak in vmcihostdoreceivedatagram struct vmcieventqp allocated by qpnotifypeer contains padding, which may carry uninitialized data to the userspace, as observed by KMSAN: BUG: KMSAN: kernel-infoleak in...

Detecting Speculative Data Flow Vulnerabilities Using Weakest Precondition Reasoning

Speculative execution is a hardware optimisation technique where a processor, while waiting on the completion of a computation required for an instruction, continues to execute later instructions based on a predicted value of the pending computation. It came to the forefront of security research ...

AlmaLinux 8 : kernel-rt (ALSA-2025:3894)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:3894 advisory. kernel: xen: Xen hypercall page unsafe against speculative attacks Xen Security Advisory 466 CVE-2024-53241 kernel: ALSA: usb-audio: Fix out of bounds rea...

CVE-2025-22045 x86/mm: Fix flush_tlb_range() when used for zapping normal PMDs

In the Linux kernel, the following vulnerability has been resolved: x86/mm: Fix flushtlbrange when used for zapping normal PMDs On the following path, flushtlbrange can be used for zapping normal PMD entries PMD entries that point to page tables together with the PTE entries in the pointed-to pag...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

kernel: xen: Xen hypercall page unsafe against speculative attacks (Xen Security Advisory 466)

In the Linux kernel, the following vulnerability has been resolved: x86/xen: don't do PV iret hypercall through hypercall page Instead of jumping to the Xen hypercall page for doing the iret hypercall, directly code the required sequence in xen-asm.S. This is done in preparation of no longer usin...

kernel: xen: Xen hypercall page unsafe against speculative attacks (Xen Security Advisory 466)

In the Linux kernel, the following vulnerability has been resolved: x86/xen: don't do PV iret hypercall through hypercall page Instead of jumping to the Xen hypercall page for doing the iret hypercall, directly code the required sequence in xen-asm.S. This is done in preparation of no longer usin...

Moderate: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

ALSA-2025:3894 Moderate: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: xen: Xen hypercall page unsafe against speculative attacks Xen Security Advisory 466 CVE-2024-53241 kernel: ALSA: usb-audio: Fix o...

Moderate: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: xen: Xen hypercall page unsafe against speculative attacks Xen Security Advisory 466 CVE-2024-53241 kernel: ALSA: usb-audio: Fix o...

ALSA-2025:3893 Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: xen: Xen hypercall page unsafe against speculative attacks Xen Security Advisory 466 CVE-2024-53241 kernel: ALSA: usb-audio: Fix out of bounds reads when finding clock sources...

SUSE CVE-2023-53024

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation To mitigate Spectre v4, 2039f26f3aca "bpf: Fix leakage due to insufficient speculative store bypass mitigation" inserts lfence instructions after 1...

DEBIAN-CVE-2023-53024

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation To mitigate Spectre v4, 2039f26f3aca "bpf: Fix leakage due to insufficient speculative store bypass mitigation" inserts lfence instructions after 1...