Integer overflow in Linux kernel - CVE-2026-68315

Vulnerability identifier: #VU141823

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-2026-68315

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to an integer overflow in sctp_process_strreset_inreq() when processing a crafted SCTP RESET_IN_REQUEST from a peer. A remote attacker can send a specially crafted SCTP stream reset request to cause a denial of service.

Exploitation is only possible on interfaces with MTU greater than 65535, such as loopback with IPv6 jumbograms.

Linux kernel
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
kernel (Red Hat package)
kernel-rt (Red Hat package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel (Red Hat package) - update to 4.18.0-553.162.1.el8_10
kernel-rt (Red Hat package) - update to 4.18.0-553.162.1.rt7.503.el8_10

• https://git.kernel.org/stable/c/00ae679cb21a035491fdad8d58dc6d79cc68b675
• https://git.kernel.org/stable/c/18ae07691d43183d270de8be9dc8e027906015d9
• https://git.kernel.org/stable/c/1a10fe1aa9c01f41b389a31906a77d538637c9d9
• https://git.kernel.org/stable/c/6f0e39d180cd7cced647381b6fa14fd83d261047
• https://git.kernel.org/stable/c/b255d8cd6cc68045ae9eecbac3b3c14e1f176c9b

• Integer overflow in Linux kernel sctp
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 8 update for kernel