CVE-2026-31485

HIGH EPSS 2.6%

Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago

7.8 CVSS 3.1

High

Published Apr 22, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: spi: spi-fsl-lpspi: fix teardown order issue (UAF) There is a teardown order issue in the driver. The SPI controller is registered using devm_spi_register_controller(), which delays unregistration of the SPI controller until after the fsl_lpspi_remove() function returns. As the fsl_lpspi_remove() function synchronously tears down the DMA channels, a running SPI transfer triggers the following NULL pointer dereference due to use after free: | fsl_lpspi 42550000.spi: I/O Error in DMA RX | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [...] | Call trace: | fsl_lpspi_dma_transfer+0x260/0x340 [spi_fsl_lpspi] | fsl_lpspi_transfer_one+0x198/0x448 [spi_fsl_lpspi] | spi_transfer_one_message+0x49c/0x7c8 | __spi_pump_transfer_message+0x120/0x420 | __spi_sync+0x2c4/0x520 | spi_sync+0x34/0x60 | spidev_message+0x20c/0x378 [spidev] | spidev_ioctl+0x398/0x750 [spidev] [...] Switch from devm_spi_register_controller() to spi_register_controller() in fsl_lpspi_probe() and add the corresponding spi_unregister_controller() in fsl_lpspi_remove().

CVSS Details

Base Score

7.8

Exploitability

1.8

Impact

5.9

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector Local

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

2.6% percentile

Exploit & Patch Status

No Known Exploit

Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 15

Vendor	Product	Version	Range
linux	linux_kernel	*	≥4.10.1 – <5.10.253
linux	linux_kernel	*	≥5.11 – <5.15.203
linux	linux_kernel	*	≥5.16 – <6.1.168
linux	linux_kernel	*	≥6.2 – <6.6.131
linux	linux_kernel	*	≥6.7 – <6.12.80
linux	linux_kernel	*	≥6.13 – <6.18.21
linux	linux_kernel	*	≥6.19 – <6.19.11
linux	linux_kernel	4.10	any
linux	linux_kernel	7.0	any
linux	linux_kernel	7.0	any
linux	linux_kernel	7.0	any
linux	linux_kernel	7.0	any
linux	linux_kernel	7.0	any
linux	linux_kernel	7.0	any
linux	linux_kernel	7.0	any

References 8

git.kernel.org https://git.kernel.org/stable/c/15650dfbaeeb14bcaaf053b93cf631db8d465300

Patch
git.kernel.org https://git.kernel.org/stable/c/adb25339b66112393fd6892ceff926765feb5b86

Patch
git.kernel.org https://git.kernel.org/stable/c/b341c1176f2e001b3adf0b47154fc31589f7410e

Patch
git.kernel.org https://git.kernel.org/stable/c/ca4483f36ac1b62e69f8b182c5b8f059e0abecfb

Patch
git.kernel.org https://git.kernel.org/stable/c/d5d01f24bc6fbde40b4e567ef9160194b61267bc

Patch
git.kernel.org https://git.kernel.org/stable/c/e3fd54f8b0317fbccc103961ddd660f2a32dcf0b

Patch
git.kernel.org https://git.kernel.org/stable/c/e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3

Patch
git.kernel.org https://git.kernel.org/stable/c/fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6

Patch

Remediation

git.kernel.org https://git.kernel.org/stable/c/15650dfbaeeb14bcaaf053b93cf631db8d465300

Patch
git.kernel.org https://git.kernel.org/stable/c/adb25339b66112393fd6892ceff926765feb5b86

Patch
git.kernel.org https://git.kernel.org/stable/c/b341c1176f2e001b3adf0b47154fc31589f7410e

Patch
git.kernel.org https://git.kernel.org/stable/c/ca4483f36ac1b62e69f8b182c5b8f059e0abecfb

Patch
git.kernel.org https://git.kernel.org/stable/c/d5d01f24bc6fbde40b4e567ef9160194b61267bc

Patch
git.kernel.org https://git.kernel.org/stable/c/e3fd54f8b0317fbccc103961ddd660f2a32dcf0b

Patch
git.kernel.org https://git.kernel.org/stable/c/e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3

Patch
git.kernel.org https://git.kernel.org/stable/c/fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6

Patch