UBUNTU-CVE-2026-23402

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

CVE-2026-23402 KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

CVE-2026-23402 KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE Adjust KVM's sanity check against overwriting a shadow-present SPTE with a another SPTE with a different target PFN to only apply to direct MMUs, i.e. on...

tracing/dma: Cap dma_map_sg tracepoint arrays to prevent buffer overflow

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SUSE CVE-2026-23390

In the Linux kernel, the following vulnerability has been resolved: tracing/dma: Cap dmamapsg tracepoint arrays to prevent buffer overflow The dmamapsg tracepoint can trigger a perf buffer overflow when tracing large scatter-gather lists. With devices like virtio-gpu creating large DRM buffers,...

EUVD-2026-15391

In the Linux kernel, the following vulnerability has been resolved: tracing/dma: Cap dmamapsg tracepoint arrays to prevent buffer overflow The dmamapsg tracepoint can trigger a perf buffer overflow when tracing large scatter-gather lists. With devices like virtio-gpu creating large DRM buffers,...

CVE-2026-23343

In the Linux kernel, the following vulnerability has been resolved: xdp: produce a warning when calculated tailroom is negative Many ethernet drivers report xdp Rx queue frag size as being the same as DMA write size. However, the only user of this field, namely bpfxdpfragsincreasetail, clearly...

UBUNTU-CVE-2026-23343

In the Linux kernel, the following vulnerability has been resolved: xdp: produce a warning when calculated tailroom is negative Many ethernet drivers report xdp Rx queue frag size as being the same as DMA write size. However, the only user of this field, namely bpfxdpfragsincreasetail, clearly...

UBUNTU-CVE-2026-23386

In the Linux kernel, the following vulnerability has been resolved: gve: fix incorrect buffer cleanup in gvetxcleanpendingpackets for QPL In DQ-QPL mode, gvetxcleanpendingpackets incorrectly uses the RDA buffer cleanup path. It iterates numbufs times and attempts to unmap entries in the dma array...

UBUNTU-CVE-2026-23390

In the Linux kernel, the following vulnerability has been resolved: tracing/dma: Cap dmamapsg tracepoint arrays to prevent buffer overflow The dmamapsg tracepoint can trigger a perf buffer overflow when tracing large scatter-gather lists. With devices like virtio-gpu creating large DRM buffers,...

CVE-2026-23386

In the Linux kernel, the following vulnerability has been resolved: gve: fix incorrect buffer cleanup in gvetxcleanpendingpackets for QPL In DQ-QPL mode, gvetxcleanpendingpackets incorrectly uses the RDA buffer cleanup path. It iterates numbufs times and attempts to unmap entries in the dma array...

CVE-2026-23343 xdp: produce a warning when calculated tailroom is negative

In the Linux kernel, the following vulnerability has been resolved: xdp: produce a warning when calculated tailroom is negative Many ethernet drivers report xdp Rx queue frag size as being the same as DMA write size. However, the only user of this field, namely bpfxdpfragsincreasetail, clearly...

RLSA-2023:6980 Moderate: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update

Kernel-based Virtual Machine KVM offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-005643)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005643 advisory. In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Return the firmware result upon destroying QP/RQ Previously when destroying a QP/RQ, t...

CVE-2023-31364

Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine VM to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service...

CVE-2023-31364

Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine VM to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service...

CVE-2023-31364

Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine VM to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service...

EUVD-2023-35675

Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine VM to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service...

CVE-2023-31364

Improper handling of direct memory writes in the input-output memory management unit could allow a malicious guest virtual machine VM to flood a host with writes, potentially causing a fatal machine check error resulting in denial of service...

CVE-2023-31364

CVE-2023-31364 involves improper handling of direct memory writes in the IOMMU. A malicious guest VM could flood the host with writes, potentially triggering a fatal machine check error (MCE) and denial of service. Connected details indicate an AMD-specific risk vector where guest VMs may flood t...