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Echo: linux: security update to 6.12.57-1

medium Tenable Self-Hosted Container Security Plugin ID 465440

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: net: mscc: ocelot: Fix use-after-free
 caused by cyclic delayed work The origin code calls cancel_delayed_work() in ocelot_stats_deinit() to
 cancel the cyclic delayed work item ocelot->stats_work. However, cancel_delayed_work() may fail to cancel
 the work item if it is already executing. While destroy_workqueue() does wait for all pending work items
 in the work queue to complete before destroying the work queue, it cannot prevent the delayed work item
 from being rescheduled within the ocelot_check_stats_work() function. This limitation exists because the
 delayed work item is only enqueued into the work queue after its timer expires. Before the timer
 expiration, destroy_workqueue() has no visibility of this pending work item. Once the work queue appears
 empty, destroy_workqueue() proceeds with destruction. When the timer eventually expires, the delayed work
 item gets queued again, leading to the following warning: workqueue: cannot queue ocelot_check_stats_work
 on wq ocelot-switch-stats WARNING: CPU: 2 PID: 0 at kernel/workqueue.c:2255 __queue_work+0x875/0xaf0 ...
 RIP: 0010:__queue_work+0x875/0xaf0 ... RSP: 0018:ffff88806d108b10 EFLAGS: 00010086 RAX: 0000000000000000
 RBX: 0000000000000101 RCX: 0000000000000027 RDX: 0000000000000027 RSI: 0000000000000004 RDI:
 ffff88806d123e88 RBP: ffffffff813c3170 R08: 0000000000000000 R09: ffffed100da247d2 R10: ffffed100da247d1
 R11: ffff88806d123e8b R12: ffff88800c00f000 R13: ffff88800d7285c0 R14: ffff88806d0a5580 R15:
 ffff88800d7285a0 FS: 0000000000000000(0000) GS:ffff8880e5725000(0000) knlGS:0000000000000000 CS: 0010 DS:
 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe18e45ea10 CR3: 0000000005e6c000 CR4: 00000000000006f0 Call
 Trace: <IRQ> ? kasan_report+0xc6/0xf0 ? __pfx_delayed_work_timer_fn+0x10/0x10 ?
 __pfx_delayed_work_timer_fn+0x10/0x10 call_timer_fn+0x25/0x1c0 __run_timer_base.part.0+0x3be/0x8c0 ?
 __pfx_delayed_work_timer_fn+0x10/0x10 ? rcu_sched_clock_irq+0xb06/0x27d0 ?
 __pfx___run_timer_base.part.0+0x10/0x10 ? try_to_wake_up+0xb15/0x1960 ? _raw_spin_lock_irq+0x80/0xe0 ?
 __pfx__raw_spin_lock_irq+0x10/0x10 tmigr_handle_remote_up+0x603/0x7e0 ?
 __pfx_tmigr_handle_remote_up+0x10/0x10 ? sched_balance_trigger+0x1c0/0x9f0 ? sched_tick+0x221/0x5a0 ?
 _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 ? tick_nohz_handler+0x339/0x440 ?
 __pfx_tmigr_handle_remote_up+0x10/0x10 __walk_groups.isra.0+0x42/0x150 tmigr_handle_remote+0x1f4/0x2e0 ?
 __pfx_tmigr_handle_remote+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ?
 clockevents_program_event+0x1d4/0x2a0 ? hrtimer_interrupt+0x322/0x780 handle_softirqs+0x16a/0x550
 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... The following diagram reveals the
 cause of the above warning: CPU 0 (remove) | CPU 1 (delayed work callback) mscc_ocelot_remove() |
 ocelot_deinit() | ocelot_check_stats_work() ocelot_stats_deinit() | cancel_delayed_work()| ... |
 queue_delayed_work() destroy_workqueue() | (wait a time) | __queue_work() //UAF The above scenario
 actually constitutes a UAF vulnerability. The ocelot_stats_deinit() is only invoked when initialization
 failure or resource destruction, so we must ensure that any delayed work items cannot be rescheduled.
 Replace cancel_delayed_work() with disable_delayed_work_sync() to guarantee proper cancellation of the
 delayed work item and ensure completion of any currently executing work before the workqueue is
 deallocated. A deadlock concern was considered: ocelot_stats_deinit() is called in a process context and
 is not holding any locks that the delayed work item might also need. Therefore, the use of the _sync()
 variant is safe here. This bug was identified through static analysis. To reproduce the issue and validate
 the fix, I simulated ocelot-swit ---truncated--- (CVE-2025-40003)

Solution

Update the linux library and its related packages to version 6.12.57-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-40003

Plugin Details

Severity: Medium

ID: 465440

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.91

CVSS v2

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.3

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

CVSS Score Source: CVE-2025-40003

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/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: 10/19/2025

Vulnerability Publication Date: 10/18/2025

Reference Information

CVE: CVE-2025-40003