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Echo: linux: security update to 6.1.153-1

high Tenable Cloud Security Plugin ID 464947

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: btrfs: qgroup: fix race between quota
 disable and quota rescan ioctl There's a race between a task disabling quotas and another running the
 rescan ioctl that can result in a use-after-free of qgroup records from the fs_info->qgroup_tree rbtree.
 This happens as follows: 1) Task A enters btrfs_ioctl_quota_rescan() -> btrfs_qgroup_rescan(); 2) Task B
 enters btrfs_quota_disable() and calls btrfs_qgroup_wait_for_completion(), which does nothing because at
 that point fs_info->qgroup_rescan_running is false (it wasn't set yet by task A); 3) Task B calls
 btrfs_free_qgroup_config() which starts freeing qgroups from fs_info->qgroup_tree without taking the lock
 fs_info->qgroup_lock; 4) Task A enters qgroup_rescan_zero_tracking() which starts iterating the
 fs_info->qgroup_tree tree while holding fs_info->qgroup_lock, but task B is freeing qgroup records from
 that tree without holding the lock, resulting in a use-after-free. Fix this by taking fs_info->qgroup_lock
 at btrfs_free_qgroup_config(). Also at btrfs_qgroup_rescan() don't start the rescan worker if quotas were
 already disabled. (CVE-2025-39759)

Solution

Update the linux library and its related packages to version 6.1.153-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-39759

Plugin Details

Severity: High

ID: 464947

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.48

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

CVSS Score Source: CVE-2025-39759

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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

Patch Publication Date: 9/15/2025

Vulnerability Publication Date: 9/11/2025

Reference Information

CVE: CVE-2025-39759