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linux-hwe-edge

linux-aws-5.0

linux-aws-5.3

linux-azure

linux-azure-5.3

linux-azure-edge

linux-gcp

linux-gcp-5.3

linux-gke-4.15

linux-gke-5.4

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linux-oracle-5.0

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linux-aws-5.13

linux-aws-5.8

linux-azure-5.11

linux-azure-5.13

linux-azure-5.8

linux-azure-fde

linux-gcp-5.11

linux-gcp-5.13

linux-gcp-5.8

linux-gke

linux-gke-5.15

linux-gkeop

linux-gkeop-5.15

linux-hwe-5.11

linux-hwe-5.13

linux-hwe-5.8

linux-intel-5.13

linux-oem-5.10

linux-oem-5.13

linux-oem-5.14

linux-oem-5.6

linux-oracle-5.11

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linux-raspi2

linux-riscv

linux-riscv-5.11

linux-riscv-5.8

linux-allwinner-5.19

linux-aws-5.19

linux-aws-6.2

linux-aws-6.5

linux-aws-6.8

linux-azure-5.19

linux-azure-6.2

linux-azure-6.5

linux-azure-6.8

linux-azure-fde-5.19

linux-azure-fde-6.2

linux-azure-fde-6.8

linux-gcp-5.19

linux-gcp-6.2

linux-gcp-6.5

linux-gcp-6.8

linux-hwe-5.19

linux-hwe-6.2

linux-hwe-6.5

linux-hwe-6.8

linux-ibm-6.8

linux-intel-iot-realtime

linux-lowlatency-hwe-5.19

linux-lowlatency-hwe-6.2

linux-lowlatency-hwe-6.5

linux-lowlatency-hwe-6.8

linux-nvidia-6.2

linux-nvidia-6.5

linux-nvidia-6.8

linux-oem-5.17

linux-oem-6.0

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linux-oracle-6.5

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linux

linux-aws

linux-aws-6.14

linux-aws-6.17

linux-azure-6.11

linux-azure-6.14

linux-azure-6.17

linux-azure-fde-6.14

linux-azure-fde-6.17

A high-severity vulnerability (CVE-2026-23383) in the Linux kernel's BPF JIT allocator on arm64 architecture was fixed by enforcing 8-byte alignment for the JIT buffer. Previously, the buffer was only 4-byte aligned, which could cause atomic tearing during concurrent updates of a 64-bit target field, potentially leading to corrupted jumps in JIT-compiled code. This issue affects multiple Linux kernel versions prior to 6.8.0 and related builds. A patch is available and included in recent Linux kernel updates. Users should apply the update and reboot to mitigate the risk.

The vulnerability CVE-2026-23383 in the Linux kernel affects the BPF JIT allocator on arm64 platforms. The struct bpf_plt contains a 64-bit target field that must be 8-byte aligned for atomic operations. However, the JIT buffer was allocated with only 4-byte alignment, allowing the target field to be misaligned. This misalignment can cause torn reads during concurrent updates via WRITE_ONCE() while the JIT code executes, potentially leading to jumps to corrupted addresses. The fix increases the JIT buffer alignment to 8 bytes, ensuring atomicity and preventing this issue. The vulnerability is addressed in Linux kernel versions 6.8.0 and later, with patches available in Ubuntu kernel updates as per the vendor advisory.

Detailed information about UBUNTU-CVE-2026-23383 affecting null linux-hwe-edge. Get real-time updates, technical details, and mitigation strategies.

UBUNTU-CVE-2026-23383 - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Force 8-byte alignment for JIT buffer to prevent atomic tearing… (CVE-2026-23383)

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