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AlienVault OTX Vulnerabilities

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linux-hwe-edge

linux-aws-5.0

linux-aws-5.3

linux-aws-5.4

linux-azure

linux-azure-5.3

linux-azure-5.4

linux-azure-edge

linux-gcp

linux-gcp-5.3

linux-gcp-5.4

linux-gke-4.15

linux-gke-5.4

linux-gkeop-5.4

linux-hwe

linux-hwe-5.4

linux-ibm-5.4

linux-oem

linux-oracle-5.0

linux-oracle-5.3

linux-oracle-5.4

linux-raspi-5.4

linux

linux-aws

linux-aws-5.11

linux-aws-5.13

linux-aws-5.15

linux-aws-5.8

linux-azure-5.11

linux-azure-5.13

linux-azure-5.15

linux-azure-5.8

linux-azure-fde

linux-bluefield

linux-gcp-5.11

linux-gcp-5.13

linux-gcp-5.15

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-5.15

linux-hwe-5.8

linux-ibm

linux-ibm-5.15

linux-intel-5.13

linux-intel-iotg-5.15

linux-iot

linux-kvm

linux-lowlatency-hwe-5.15

linux-nvidia-tegra-5.15

linux-oem-5.10

linux-oem-5.13

linux-oem-5.14

linux-oem-5.6

linux-oracle

linux-oracle-5.11

linux-oracle-5.13

linux-oracle-5.15

linux-oracle-5.8

linux-raspi

linux-raspi2

linux-riscv

linux-riscv-5.11

linux-riscv-5.15

linux-riscv-5.8

linux-xilinx-zynqmp

linux-aws-fips

linux-azure-fips

linux-fips

linux-gcp-fips

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

A vulnerability in the Linux kernel's networking subsystem involving hardened usercopy was resolved. The flaw caused a kernel panic when CONFIG_HARDENED_USERCOPY was enabled due to missing usercopy whitelist definitions in skbuff_fclone_cache. This led to a BUG() during copying of socket error queue data to userspace. The issue affects multiple Linux kernel versions prior to specific patched releases and has been fixed in updated kernel packages. The vulnerability has a medium severity score and no known exploits in the wild. Users should apply the official patches and reboot to mitigate the issue.

CVE-2026-22977 is a vulnerability in the Linux kernel networking code where skbuff_fclone_cache was created without defining a usercopy whitelist region, unlike skbuff_head_cache. When CONFIG_HARDENED_USERCOPY is enabled, this causes a kernel panic (BUG()) during the copying of sk_buff.cb data to userspace via sock_recv_errqueue() and put_cmsg(). The crash occurs when TCP allocates an skb using alloc_skb_fclone(), clones it, queues it to sk_error_queue, and userspace reads the error queue. The kernel's __check_heap_object() fails due to the missing usercopy whitelist, causing the panic. This flaw has been fixed in updated Linux kernel versions distributed by Ubuntu and others.

Detailed information about UBUNTU-CVE-2026-22977 affecting null linux-hwe-edge. Get real-time updates, technical details, and mitigation strategies.

UBUNTU-CVE-2026-22977 - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net: sock: fix hardened usercopy panic in sock_recv_errqueue skbuff_fclone_cache… (CVE-2026-22977)

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