Memory leak in Linux kernel - CVE-2026-72081

Vulnerability identifier: #VU143512

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-72081

CWE-ID: CWE-401

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 a memory leak in efct_dispatch_fcp_cmd() in the efct SCSI driver when processing an unsolicited FCP command with an unsupported additional CDB. A remote attacker can send a crafted FCP command to cause a denial of service.

Linux kernel
Ubuntu
linux-nvidia (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia (Ubuntu package) - addressed in versions 5.15.0-1112.113, 5.15.0.1112.112
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1

• https://git.kernel.org/stable/c/235159f75ab6f95484494db4cc031663e5ee4680
• https://git.kernel.org/stable/c/42a391d508e1f52fda5d81344e100a53c00898e3
• https://git.kernel.org/stable/c/8c689a8f229223cec4a821c65cfe40f8e8c56470
• https://git.kernel.org/stable/c/94cbfed191248dc88c23fc881119bb399486ddfd
• https://git.kernel.org/stable/c/9cb2d5291dbfe7bed565ead3337047dee9ed1064
• https://git.kernel.org/stable/c/9d479f50a6067954259414aa66d816c7df081286
• https://git.kernel.org/stable/c/df87532e9212238509f23effd0ca39d9c3062d21

• Memory leak in Linux kernel elx efct driver
• Ubuntu update for linux-gcp-7.0
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-azure-7.0