Detections
Analytics

Google: sys-kernel/cchost-kernel-6_12, sys-kernel/cchost-kernel-6_18, sys-kernel/csql-kernel-6_12, sys-kernel/csql-kernel-6_18, sys-kernel/lakitu-kernel-6_12, sys-kernel/lakitu-kernel-6_18, sys-kernel/lakitu-nc-kernel-6_12, sys-kernel/lakitu-nc-kernel-6_18: security update to 19999.44.21

critical Tenable Self-Hosted Container Security Plugin ID 470098

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: scsi: target: core: Fix iSCSI ISID
 use-after-free in REGISTER AND MOVE core_scsi3_emulate_pro_register_and_move() maps the PERSISTENT RESERVE
 OUT parameter list with transport_kmap_data_sg() and parses the destination TransportID with
 target_parse_pr_out_transport_id(). For an iSCSI TransportID (FORMAT CODE 01b),
 iscsi_parse_pr_out_transport_id() returns the ISID in iport_ptr as a raw pointer into that mapped buffer.
 The function then unmaps the buffer with transport_kunmap_data_sg() before dereferencing iport_ptr in
 strcmp(), __core_scsi3_locate_pr_reg() and core_scsi3_alloc_registration(). When the parameter list spans
 more than one page (PARAMETER LIST LENGTH > 4096), transport_kmap_data_sg() uses vmap() and
 transport_kunmap_data_sg() does vunmap(), so the kernel virtual address backing iport_ptr is torn down and
 every subsequent dereference is a use-after-free read of the unmapped region. Keep the parameter list
 mapped until iport_ptr is no longer needed: drop the early transport_kunmap_data_sg() and unmap once on
 the success path, right before returning. The error paths already unmap through the existing "if (buf)
 transport_kunmap_data_sg(cmd)" at the out: label, which now runs on every post-map error exit because buf
 is no longer cleared early. Only reads of the mapping happen while spinlocks are held; the map and unmap
 calls remain outside any lock. The sibling caller core_scsi3_decode_spec_i_port() already uses the buffer
 before unmapping it and is left unchanged. (CVE-2026-72083)

Solution

Update the sys-kernel/cchost-kernel-6_12 library and its related packages to version 19999.44.21 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-133.oval.xml.tar.gz

Plugin Details

Severity: Critical

ID: 470098

Version: Revision 1.6

Type: Local

Published: 10/3/2026

Updated: 10/6/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.27

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-72083

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 8/11/2026

Reference Information

CVE: CVE-2026-72083