#VU91060 Use-after-free in Linux kernel - CVE-2021-47328

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Main Vulnerability Database Vulnerabilities #VU91060

#VU91060 Use-after-free in Linux kernel - CVE-2021-47328

Published: June 4, 2024 / Updated: May 13, 2025


Vulnerability identifier: #VU91060
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47328
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the iscsi_prep_bidi_ahs(), iscsi_check_tmf_restrictions(), iscsi_data_in_rsp(), EXPORT_SYMBOL_GPL(), iscsi_exec_task_mgmt_fn(), iscsi_eh_abort(), iscsi_eh_device_reset(), iscsi_session_recovery_timedout(), iscsi_conn_failure(), iscsi_eh_target_reset(), iscsi_session_setup(), iscsi_conn_setup(), iscsi_conn_teardown(), iscsi_conn_start() and iscsi_start_session_recovery() functions in drivers/scsi/libiscsi.c. A local user can escalate privileges on the system.


Remediation

Install update from vendor's website.

External links