CVE-2025-39940: dm-stripe: fix a possible integer overflow

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-04 · updated 2026-10-21
Weakness: CWE-190

Description

In the Linux kernel, the following vulnerability has been resolved: dm-stripe: fix a possible integer overflow There's a possible integer overflow in stripe_io_hints if we have too large chunk size. Test if the overflow happened, and if it did, don't set limits->io_min and limits->io_opt;

Affected products

Linux kernel: from 2.6.31.1 before 6.12.49; from 6.13 before 6.16.9; 2.6.31, 2.6.31-rc9, 6.17-rc1, 6.17-rc2, 6.17-rc3, 6.17-rc4 (+2) — fixed in 6.12.49, 6.16.9

How to fix

Upgrade to a fixed version: Linux kernel 6.12.49, 6.16.9. Check the vendor advisory for mitigations.

References

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