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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

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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-azure-fde-5.15

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-5.15

linux-intel-5.13

linux-intel-iotg-5.15

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-5.11

linux-oracle-5.13

linux-oracle-5.15

linux-oracle-5.8

linux-raspi2

linux-riscv

linux-riscv-5.11

linux-riscv-5.15

linux-riscv-5.8

linux

linux-allwinner-5.19

linux-aws

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

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linux-ibm

linux-ibm-6.8

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linux-nvidia-6.2

linux-nvidia-6.5

linux-nvidia-6.8

linux-nvidia-tegra

linux-nvidia-tegra-igx

linux-oem-5.17

A high-severity vulnerability (CVE-2026-23450) in the Linux kernel's SMC TCP socket handling was resolved. The flaw involved a NULL pointer dereference and use-after-free (UAF) condition in the smc_tcp_syn_recv_sock() function, triggered by a race condition when closing SMC listen sockets concurrently. This vulnerability could lead to system crashes or potentially allow an attacker to compromise the system. Multiple Linux kernel subsystems were updated to address this and other issues. Ubuntu has released patched kernel versions to fix this vulnerability, requiring system updates and reboots. Due to an ABI change, recompilation of third-party kernel modules is necessary after updating. The vulnerability affects specific Linux kernel versions prior to the patched releases.

CVE-2026-23450 is a vulnerability in the Linux kernel's SMC (Shared Memory Communications) TCP socket implementation. The issue arises in the smc_tcp_syn_recv_sock() function, which is called during the TCP receive path. A race condition occurs when the SMC listen socket is closed concurrently: smc_close_active() sets the sk_user_data pointer to NULL under a lock, and the associated smc_sock structure can be freed shortly thereafter. This leads to two critical issues: a NULL pointer dereference when sk_user_data is accessed as NULL, and a use-after-free when smc_sock is accessed after being freed. The vulnerability was discovered via Syzkaller fuzzing and could cause kernel panics or potentially allow attackers to compromise system integrity. Ubuntu's security advisories USN-8490-1 and USN-8491-1 confirm the availability of patches in Linux kernel versions 6.17.x and related OEM and cloud kernels. Users must update to these fixed versions and reboot systems. The update involves an ABI change requiring recompilation of third-party kernel modules.

Detailed information about UBUNTU-CVE-2026-23450 affecting null linux-hwe-edge. Get real-time updates, technical details, and mitigation strategies.

UBUNTU-CVE-2026-23450 - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net/smc: fix NULL dereference and UAF in smc_tcp_syn_recv_sock() Syzkaller… (CVE-2026-23450)

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