Linux Kernel up to 6.1.146/6.6.99/6.12.39/6.15.7 iio fxls8962af_fifo_flush null pointer dereference

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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.1.146/6.6.99/6.12.39/6.15.7. It has been declared as critical. This issue affects the function fxls8962af_fifo_flush of the component iio. The manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2025-38485. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.146/6.6.99/6.12.39/6.15.7. It has been classified as critical. Affected is the function fxls8962af_fifo_flush of the component iio. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: iio: accel: fxls8962af: Fix use after free in fxls8962af_fifo_flush fxls8962af_fifo_flush() uses indio_dev->active_scan_mask (with iio_for_each_active_channel()) without making sure the indio_dev stays in buffer mode. There is a race if indio_dev exits buffer mode in the middle of the interrupt that flushes the fifo. Fix this by calling synchronize_irq() to ensure that no interrupt is currently running when disabling buffer mode. Unable to handle kernel NULL pointer dereference at virtual address 00000000 when read [...] _find_first_bit_le from fxls8962af_fifo_flush+0x17c/0x290 fxls8962af_fifo_flush from fxls8962af_interrupt+0x80/0x178 fxls8962af_interrupt from irq_thread_fn+0x1c/0x7c irq_thread_fn from irq_thread+0x110/0x1f4 irq_thread from kthread+0xe0/0xfc kthread from ret_from_fork+0x14/0x2c

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2025-38485 since 04/16/2025. The exploitability is told to be difficult. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 252233 (Linux Distros Unpatched Vulnerability : CVE-2025-38485), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.147, 6.6.100, 6.12.40 or 6.15.8 eliminates this vulnerability. Applying the patch 6ecd61c201b27ad2760b3975437ad2b97d725b98/dda42f23a8f5439eaac9521ce0531547d880cc54/bfcda3e1015791b3a63fb4d3aad408da9cf76e8f/1803d372460aaa9ae0188a30c9421d3f157f2f04/1fe16dc1a2f5057772e5391ec042ed7442966c9a is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (252233) and CERT Bund (WID-SEC-2025-1665). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • NetApp ActiveIQ Unified Manager
  • Dell PowerProtect Data Domain
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway
  • IBM Security Verify Access

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 252233
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-38485

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.147/6.6.100/6.12.40/6.15.8
Patch: 6ecd61c201b27ad2760b3975437ad2b97d725b98/dda42f23a8f5439eaac9521ce0531547d880cc54/bfcda3e1015791b3a63fb4d3aad408da9cf76e8f/1803d372460aaa9ae0188a30c9421d3f157f2f04/1fe16dc1a2f5057772e5391ec042ed7442966c9a

Timelineinfo

04/16/2025 CVE reserved
07/28/2025 +103 days Advisory disclosed
07/28/2025 +0 days VulDB entry created
01/25/2026 +181 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38485 (🔒)
GCVE (CVE): GCVE-0-2025-38485
GCVE (VulDB): GCVE-100-317904
CERT Bund: WID-SEC-2025-1665 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 07/28/2025 14:53
Updated: 01/25/2026 15:00
Changes: 07/28/2025 14:53 (59), 08/17/2025 20:46 (7), 08/19/2025 11:11 (1), 08/19/2025 14:11 (2), 08/24/2025 00:28 (1), 08/26/2025 18:42 (1), 10/01/2025 07:04 (1), 10/18/2025 16:15 (1), 11/02/2025 03:55 (1), 11/16/2025 21:41 (1), 01/07/2026 17:46 (12), 01/25/2026 15:00 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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