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VulnerabilityPublished Updated

CVE-2025-37896: Linux kernel · spi: spi-mem: Add fix to avoid divide error

Source GCVE Database

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 13 Nov 2026, 19:41 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

AI-suggested

A fix has been implemented in the Linux kernel to skip the problematic calculation when dummy bytes are zero, preventing the divide error. Users should apply the official kernel update that includes this fix once available. Since this is a kernel-level issue, upgrading to a patched kernel version is the recommended remediation.

Description

CVE-2025-37896 is a medium severity vulnerability in the Linux kernel's SPI memory driver. It involves a divide error caused by calculating operation duration when dummy bytes are zero, such as in certain Winbond SPINAND flash memory devices. This flaw leads to a kernel oops (crash) due to a divide error in spi_mem_calc_op_duration(). The issue has been fixed by skipping the calculation when dummy bytes are zero.

References

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