Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2023-53148 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

igb: Fix igb_down hung on surprise removal

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

igb: Fix igb_down hung on surprise removal

In a setup where a Thunderbolt hub connects to Ethernet and a display

through USB Type-C, users may experience a hung task timeout when they

remove the cable between the PC and the Thunderbolt hub.

This is because the igb_down function is called multiple times when

the Thunderbolt hub is unplugged. For example, the igb_io_error_detected

triggers the first call, and the igb_remove triggers the second call.

The second call to igb_down will block at napi_synchronize.

Here's the call trace:

__schedule+0x3b0/0xddb

? __mod_timer+0x164/0x5d3

schedule+0x44/0xa8

schedule_timeout+0xb2/0x2a4

? run_local_timers+0x4e/0x4e

msleep+0x31/0x38

igb_down+0x12c/0x22a [igb 6615058754948bfde0bf01429257eb59f13030d4]

__igb_close+0x6f/0x9c [igb 6615058754948bfde0bf01429257eb59f13030d4]

igb_close+0x23/0x2b [igb 6615058754948bfde0bf01429257eb59f13030d4]

__dev_close_many+0x95/0xec

dev_close_many+0x6e/0x103

unregister_netdevice_many+0x105/0x5b1

unregister_netdevice_queue+0xc2/0x10d

unregister_netdev+0x1c/0x23

igb_remove+0xa7/0x11c [igb 6615058754948bfde0bf01429257eb59f13030d4]

pci_device_remove+0x3f/0x9c

device_release_driver_internal+0xfe/0x1b4

pci_stop_bus_device+0x5b/0x7f

pci_stop_bus_device+0x30/0x7f

pci_stop_bus_device+0x30/0x7f

pci_stop_and_remove_bus_device+0x12/0x19

pciehp_unconfigure_device+0x76/0xe9

pciehp_disable_slot+0x6e/0x131

pciehp_handle_presence_or_link_change+0x7a/0x3f7

pciehp_ist+0xbe/0x194

irq_thread_fn+0x22/0x4d

? irq_thread+0x1fd/0x1fd

irq_thread+0x17b/0x1fd

? irq_forced_thread_fn+0x5f/0x5f

kthread+0x142/0x153

? __irq_get_irqchip_state+0x46/0x46

? kthread_associate_blkcg+0x71/0x71

ret_from_fork+0x1f/0x30

In this case, igb_io_error_detected detaches the network interface

and requests a PCIE slot reset, however, the PCIE reset callback is

not being invoked and thus the Ethernet connection breaks down.

As the PCIE error in this case is a non-fatal one, requesting a

slot reset can be avoided.

This patch fixes the task hung issue and preserves Ethernet

connection by ignoring non-fatal PCIE errors.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2023-53148 is recorded against 2 packages.

  • kernel (from 6.2.0 up to 6.4.7)
  • linux-kernel (from 6.2 up to 6.4.7)

Timeline and source

Published on 15 September 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-53148 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-09-15
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.2.0 6.4.7
linux-kernel 6.2 6.4.7

References

Similar Threats

Site Security Check

Is kernel part of your stack?

CVE-2023-53148 is rated CVSS 7.8 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2023
✓