Heap-based buffer overflow in Linux kernel - CVE-2026-72130
Published: August 16, 2026
Vulnerability identifier: #VU143460
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72130
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to a heap-based buffer overflow in nvmet_execute_auth_receive() and the DH-HMAC-CHAP response builders when processing AUTH_RECEIVE commands with a too-short allocation length. A remote user can send a specially crafted AUTH_RECEIVE command to cause a denial of service.
This is reachable only when in-band DH-HMAC-CHAP authentication is configured on the target.
Affected software
Linux kernel
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
kernel (Red Hat package)
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
kernel (Red Hat package)
How to mitigate CVE-2026-72130
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
kernel (Red Hat package) - update to 6.12.0-211.50.1.el10_2
kernel (Red Hat package) - update to 6.12.0-211.50.1.el10_2