Infinite loop in Linux kernel - CVE-2026-98614

Vulnerability identifier: #VU156921

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-98614

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service through an infinite loop in the Linux kernel's SCTP implementation.

The vulnerability exists due to an unreachable loop termination condition in sctp_assoc_update_retran_path() when selecting a retransmission path while every remaining transport, including the current retransmission path, is SCTP_UNCONFIRMED. A remote attacker can trigger affected SCTP retransmission-path processing under these conditions to cause the transport-selection loop to run indefinitely.

Linux kernel
Ubuntu
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-tegra-igx (Ubuntu package)
linux-nvidia-tegra-5.15 (Ubuntu package)
linux (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (Ubuntu package)
linux-aws (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia-tegra (Ubuntu package) - update to 5.15.0-1070.72
linux-nvidia-tegra-igx (Ubuntu package) - update to 5.15.0-1059.59
linux-nvidia-tegra-5.15 (Ubuntu package) - update to 5.15.0-1070.72~20.04.1
linux (Ubuntu package) - update to 7.0.0-42.42
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17

• https://git.kernel.org/stable/c/173610fff55022a5ad1579fbcc7faa97467b58b7
• https://git.kernel.org/stable/c/3fe624c3843694ab096fdb198526ba0c659febbe
• https://git.kernel.org/stable/c/43410c1f2db53516e95ddd7e5b4b02f495b78121
• https://git.kernel.org/stable/c/83b1a7f9e718828ef364a7b004254ebb2d0035fe
• https://git.kernel.org/stable/c/c9338057df1025f578fe7d0ff08bada87b8b838d
• https://git.kernel.org/stable/c/d2c31b837406395e576afeb25958c98e9938f3f6
• https://git.kernel.org/stable/c/d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49
• https://git.kernel.org/stable/c/ddc34cc0834c873871e88b055ee6a260676efe97

• Infinite loop in Linux kernel sctp
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more
• Ubuntu update for linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx
• Ubuntu update for linux, linux-aws, linux-aws-5.15 and more