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A critical vulnerability (CVE-2026-43414) in the Linux kernel's SCSI subsystem (qla2xxx driver) involving a double free of fcport objects has been resolved. This flaw occurs in the qla24xx_els_dcmd_iocb() function where fcport is freed twice, potentially leading to system compromise. The issue affects many versions of the linux-aws kernel prior to the fixed releases. A high-severity CVSS 3.1 score of 9.8 is assigned. Official patches are available and included in Linux kernel updates version 6.17.0-1019.19 and later. Users should update and reboot to apply the fixes. The vulnerability is not known to be exploited in the wild.

The Linux kernel's qla2xxx SCSI driver contained a double free vulnerability in the qla24xx_els_dcmd_iocb() function. Specifically, the fcport object is freed twice due to improper reference counting and error handling, which can lead to memory corruption. This flaw was fixed in the Linux kernel 6.17.0-1019.19 and related updates. The vulnerability has a CVSS 3.1 base score of 9.8 (Network attack vector, Low attack complexity, No privileges required, No user interaction, Unchanged scope, High confidentiality, integrity, and availability impact). The vendor advisory from Ubuntu confirms the availability of patches and recommends updating to the fixed kernel versions. The vulnerability affects numerous linux-aws kernel versions prior to these fixed releases.

Detailed information about UBUNTU-CVE-2026-43414 affecting null linux-aws. Get real-time updates, technical details, and mitigation strategies.

UBUNTU-CVE-2026-43414 - Live Threat Intelligence - Threat Radar | OffSeq.com

Linux aws: In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb()… (CVE-2026-43414)

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