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Echo: linux: security update to 6.1.162-1

medium Tenable Cloud Security Plugin ID 463752

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: scs: fix a wrong parameter in
 __scs_magic __scs_magic() needs a 'void *' variable, but a 'struct task_struct *' is given.
 'task_scs(tsk)' is the starting address of the task's shadow call stack, and '__scs_magic(task_scs(tsk))'
 is the end address of the task's shadow call stack. Here should be '__scs_magic(task_scs(tsk))'. The user-
 visible effect of this bug is that when CONFIG_DEBUG_STACK_USAGE is enabled, the shadow call stack usage
 checking function (scs_check_usage) would scan an incorrect memory range. This could lead 1. **Inaccurate
 stack usage reporting**: The function would calculate wrong usage statistics for the shadow call stack,
 potentially showing incorrect value in kmsg. 2. **Potential kernel crash**: If the value of
 __scs_magic(tsk)is greater than that of __scs_magic(task_scs(tsk)), the for loop may access unmapped
 memory, potentially causing a kernel panic. However, this scenario is unlikely because task_struct is
 allocated via the slab allocator (which typically returns lower addresses), while the shadow call stack
 returned by task_scs(tsk) is allocated via vmalloc(which typically returns higher addresses). However,
 since this is purely a debugging feature (CONFIG_DEBUG_STACK_USAGE), normal production systems should be
 not unaffected. The bug only impacts developers and testers who are actively debugging stack usage with
 this configuration enabled. (CVE-2025-71102)

Solution

Update the linux library and its related packages to version 6.1.162-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2025-71102

Plugin Details

Severity: Medium

ID: 463752

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.49

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2025-71102

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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: 1/14/2026

Vulnerability Publication Date: 1/14/2026

Reference Information

CVE: CVE-2025-71102