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Echo: linux: security update to 6.1.159-1

medium Tenable Cloud Security Plugin ID 460540

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: s390/pci: Avoid deadlock between PCI
 error recovery and mlx5 crdump Do not block PCI config accesses through pci_cfg_access_lock() when
 executing the s390 variant of PCI error recovery: Acquire just device_lock() instead of pci_dev_lock() as
 powerpc's EEH and generig PCI AER processing do. During error recovery testing a pair of tasks was
 reported to be hung: mlx5_core 0000:00:00.1: mlx5_health_try_recover:338:(pid 5553): health recovery flow
 aborted, PCI reads still not working INFO: task kmcheck:72 blocked for more than 122 seconds. Not tainted
 5.14.0-570.12.1.bringup7.el9.s390x #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
 message. task:kmcheck state:D stack:0 pid:72 tgid:72 ppid:2 flags:0x00000000 Call Trace:
 [<000000065256f030>] __schedule+0x2a0/0x590 [<000000065256f356>] schedule+0x36/0xe0 [<000000065256f572>]
 schedule_preempt_disabled+0x22/0x30 [<0000000652570a94>] __mutex_lock.constprop.0+0x484/0x8a8
 [<000003ff800673a4>] mlx5_unload_one+0x34/0x58 [mlx5_core] [<000003ff8006745c>]
 mlx5_pci_err_detected+0x94/0x140 [mlx5_core] [<0000000652556c5a>]
 zpci_event_attempt_error_recovery+0xf2/0x398 [<0000000651b9184a>] __zpci_event_error+0x23a/0x2c0 INFO:
 task kworker/u1664:6:1514 blocked for more than 122 seconds. Not tainted
 5.14.0-570.12.1.bringup7.el9.s390x #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
 message. task:kworker/u1664:6 state:D stack:0 pid:1514 tgid:1514 ppid:2 flags:0x00000000 Workqueue:
 mlx5_health0000:00:00.0 mlx5_fw_fatal_reporter_err_work [mlx5_core] Call Trace: [<000000065256f030>]
 __schedule+0x2a0/0x590 [<000000065256f356>] schedule+0x36/0xe0 [<0000000652172e28>] pci_wait_cfg+0x80/0xe8
 [<0000000652172f94>] pci_cfg_access_lock+0x74/0x88 [<000003ff800916b6>] mlx5_vsc_gw_lock+0x36/0x178
 [mlx5_core] [<000003ff80098824>] mlx5_crdump_collect+0x34/0x1c8 [mlx5_core] [<000003ff80074b62>]
 mlx5_fw_fatal_reporter_dump+0x6a/0xe8 [mlx5_core] [<0000000652512242>]
 devlink_health_do_dump.part.0+0x82/0x168 [<0000000652513212>] devlink_health_report+0x19a/0x230
 [<000003ff80075a12>] mlx5_fw_fatal_reporter_err_work+0xba/0x1b0 [mlx5_core] No kernel log of the exact
 same error with an upstream kernel is available - but the very same deadlock situation can be constructed
 there, too: - task: kmcheck mlx5_unload_one() tries to acquire devlink lock while the PCI error recovery
 code has set pdev->block_cfg_access by way of pci_cfg_access_lock() - task: kworker mlx5_crdump_collect()
 tries to set block_cfg_access through pci_cfg_access_lock() while devlink_health_report() had acquired the
 devlink lock. A similar deadlock situation can be reproduced by requesting a crdump with > devlink health
 dump show pci/<BDF> reporter fw_fatal while PCI error recovery is executed on the same <BDF> physical
 function by mlx5_core's pci_error_handlers. On s390 this can be injected with > zpcictl --reset-fw <BDF>
 Tests with this patch failed to reproduce that second deadlock situation, the devlink command is rejected
 with "kernel answers: Permission denied" - and we get a kernel log message of: mlx5_core 1ed0:00:00.1:
 mlx5_crdump_collect:50:(pid 254382): crdump: failed to lock vsc gw err -5 because the config read of
 VSC_SEMAPHORE is rejected by the underlying hardware. Two prior attempts to address this issue have been
 discussed and ultimately rejected [see link], with the primary argument that s390's implementation of PCI
 error recovery is imposing restrictions that neither powerpc's EEH nor PCI AER handling need. Tests show
 that PCI error recovery on s390 is running to completion even without blocking access to PCI config space.
 (CVE-2025-68310)

Solution

Update the linux library and its related packages to version 6.1.159-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-68310

Plugin Details

Severity: Medium

ID: 460540

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Percentile: 96.67

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2025-68310

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/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: 12/17/2025

Vulnerability Publication Date: 12/9/2025

Reference Information

CVE: CVE-2025-68310