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Linux Kernel CVE-2026-23104

MEDIUM
2026-02-04 416baaa9-dc9f-4396-8d5f-8c081fb06d67
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Patch released
Apr 09, 2026 - 20:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Feb 04, 2026 - 17:16 nvd
MEDIUM 5.5

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

ice: fix devlink reload call trace

Commit 4da71a77fc3b ("ice: read internal temperature sensor") introduced internal temperature sensor reading via HWMON. ice_hwmon_init() was added to ice_init_feature() and ice_hwmon_exit() was added to ice_remove(). As a result if devlink reload is used to reinit the device and then the driver is removed, a call trace can occur.

BUG: unable to handle page fault for address: ffffffffc0fd4b5d Call Trace: string+0x48/0xe0 vsnprintf+0x1f9/0x650 sprintf+0x62/0x80 name_show+0x1f/0x30 dev_attr_show+0x19/0x60

The call trace repeats approximately every 10 minutes when system monitoring tools (e.g., sadc) attempt to read the orphaned hwmon sysfs attributes that reference freed module memory.

The sequence is:

  1. Driver load, ice_hwmon_init() gets called from ice_init_feature()
  2. Devlink reload down, flow does not call ice_remove()
  3. Devlink reload up, ice_hwmon_init() gets called from

ice_init_feature() resulting in a second instance

  1. Driver unload, ice_hwmon_exit() called from ice_remove() leaving the

first hwmon instance orphaned with dangling pointer

Fix this by moving ice_hwmon_exit() from ice_remove() to ice_deinit_features() to ensure proper cleanup symmetry with ice_hwmon_init().

AnalysisAI

A use-after-free vulnerability in the Linux kernel's ice driver causes a denial of service when devlink reload is followed by driver removal, as freed HWMON sensor memory is accessed by sysfs attribute handlers. Local users with sufficient privileges can trigger recurring kernel page faults approximately every 10 minutes when system monitoring tools attempt to read the orphaned hwmon attributes. This affects Linux systems with ice network drivers and causes system instability through repeated call traces.

Technical ContextAI

In the Linux kernel, the following vulnerability has been resolved:

ice: fix devlink reload call trace

Commit 4da71a77fc3b ("ice: read internal temperature sensor") introduced internal temperature sensor reading via HWMON. ice_hwmon_init() was added to ice_init_feature() and ice_hwmon_exit() was added to ice_remove(). As a result if devlink reload is used to reinit the device and then the driver is removed, a call trace can occur.

BUG: unable to handle page fault for address: ffffffffc0fd4b5d

RemediationAI

Monitor vendor advisories for a patch.

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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
Container suse/sl-micro/6.0/base-os-container:2.1.3-7.105 Affected
Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.124 Affected
Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.146 Affected
Container suse/sl-micro/6.1/baremetal-os-container:2.2.1-7.67 Affected
Container suse/sl-micro/6.1/base-os-container:2.2.1-5.90 Affected

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CVE-2026-23104 vulnerability details – vuln.today

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