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linux-hwe-edge

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linux-azure-5.3

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A vulnerability in the Linux kernel's Open vSwitch component caused a dead loop during MPLS packet parsing when unexpected MPLS packets with many label stacks were processed, leading to CPU soft lockup. This issue was identified as CVE-2025-38146 and has been fixed in updated Linux kernel versions. The vulnerability has a high severity score of 9.4 and affects numerous specific kernel versions. Ubuntu has released official patches addressing this and other kernel vulnerabilities, requiring system updates and reboots to apply fixes.

CVE-2025-38146 is a vulnerability in the Linux kernel's Open vSwitch networking subsystem where parsing of unexpected MPLS packets that do not end with the bottom label stack can cause the label count to wrap around, resulting in an infinite loop and CPU soft lockup. This is due to an out-of-bounds array index error detected by UBSAN in the flow.c file of Open vSwitch. The issue was resolved by fixing the MPLS parsing logic to prevent the dead loop. The vulnerability has a CVSS v3.1 score of 9.4 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H), indicating network exploitable with no privileges required, causing high impact on confidentiality and availability, and low impact on integrity. Ubuntu has issued security advisories USN-7769-1 and USN-7770-1 with patches for various kernel packages including generic, AWS, GCP, Oracle, and real-time kernels. Users must update to the fixed kernel versions and reboot their systems. Due to ABI changes, recompilation of third-party kernel modules is required after update.

Detailed information about Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix the dead loop of MPLS parse

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix the dead loop of MPLS parse The unexpected MPLS packet may… (CVE-2025-38146) - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix the dead loop of MPLS parse The unexpected MPLS packet may… (CVE-2025-38146)

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