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linux-hwe-edge

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A vulnerability in the Linux kernel affecting the LoongArch architecture was fixed to prevent a potential kernel panic caused by an improper switch case in the loongson_gpu_fixup_dma_hang() function. The issue involves an access to a random address due to incorrect device addressing when a discrete GPU is inserted, which could lead to an accidental double error (ADE) and kernel panic. This vulnerability has a medium severity score and does not impact confidentiality or integrity but affects availability. A patch is available and should be applied to affected kernel versions.

The Linux kernel vulnerability (CVE-2026-46156) concerns the LoongArch architecture where the function loongson_gpu_fixup_dma_hang() contains a switch case that may not handle certain cases (DC2 or DC3) correctly. This leads to readl(crtc_reg) accessing a random address because the 'device' pointer is derived incorrectly from 'base+PCI_DEVICE_ID', with 'base' calculated from 'pdev->devfn+1'. This is incorrect when a discrete GPU is present, causing a kernel accidental double error (ADE) and panic. The fix involves adding a default switch case to prevent this panic. The vulnerability has a CVSS 3.1 score of 5.5 (medium severity) with local attack vector, low complexity, low privileges required, no user interaction, unchanged scope, no confidentiality or integrity impact, but high impact on availability.

Detailed information about UBUNTU-CVE-2026-46156 affecting null linux-hwe-edge. Get real-time updates, technical details, and mitigation strategies.

UBUNTU-CVE-2026-46156 - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix potential ADE in loongson_gpu_fixup_dma_hang() The switch case in… (CVE-2026-46156)

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

This vulnerability concerns a potential ADE in the loongson_gpu_fixup_dma_hang() function within Microsoft products such as Azure Linux 3.0. The exact nature of the flaw, its exploitation method, and impact are not detailed in the available data. No CVSS score or patch information is provided, and no known exploits have been reported. The vulnerability is cataloged by the Microsoft Security Response Center but lacks further technical or remediation details.

Detailed information about LoongArch: Fix potential ADE in loongson_gpu_fixup_dma_hang() affecting Microsoft Security Response Center Microsoft. Get real-time u

LoongArch: Fix potential ADE in loongson_gpu_fixup_dma_hang() - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-46156 LoongArch: Fix potential ADE in loongson_gpu_fixup_dma_hang() - VEX

Microsoft Support Lifecycle

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LoongArch: Fix potential ADE in loongson_gpu_fixup_dma_hang()


Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix potential ADE in loongson_gpu_fixup_dma_hang() The switch case in… (CVE-2026-46156)CVE-2026-46156 0 A vulnerability in the Linux kernel affecting the LoongArch architecture was fixed to prevent a potential kernel panic caused by an improper switch case in the loongson_gpu_fixup_dma_hang() function. The issue involves an access to a random address due to incorrect device addressing when a discrete GPU is inserted, which could lead to an accidental double error (ADE) and kernel panic. This vulnerability has a medium severity score and does not impact confidentiality or integrity but affects availability. A patch is available and should be applied to affected kernel versions. MediumVulnerability#gcve #osv #ubuntu-cve-2026-46156 Join the discussion	GCVE Database	05/28/2026, 10:16:00 UTC Added: 07/17/2026, 10:20:27 UTC
LoongArch: Fix potential ADE in loongson_gpu_fixup_dma_hang()CVE-2026-46156 0 To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle UnknownVulnerability#gcve #csaf #cve-2026-46156 Join the discussion	GCVE Database	05/02/2026, 00:00:00 UTC Added: 05/29/2026, 21:01:58 UTC

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