What’s Vulnerable › Vulnerabilities

CVE-2025-21665: filemap: avoid truncating 64-bit offset to 32 bits

• 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: 2025-01-31 · updated 2026-06-17
• Weakness: CWE-835

Description

In the Linux kernel, the following vulnerability has been resolved: filemap: avoid truncating 64-bit offset to 32 bits On 32-bit kernels, folio_seek_hole_data() was inadvertently truncating a 64-bit value to 32 bits, leading to a possible infinite loop when writing to an xfs filesystem.

Affected products

• Linux kernel: from 5.12 before 5.15.177; from 5.16 before 6.1.127; from 6.2 before 6.6.74; from 6.7 before 6.12.11; 6.13-rc1, 6.13-rc2, 6.13-rc3, 6.13-rc4, 6.13-rc5, 6.13-rc6 (+1) — fixed in 5.15.177, 6.1.127, 6.12.11, 6.6.74

How to fix

Upgrade to a fixed version: Linux kernel 5.15.177, 6.1.127, 6.12.11, 6.6.74. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/09528bb1a4123e2a234eac2bc45a0e51e78dab43
• https://git.kernel.org/stable/c/280f1fb89afc01e7376f59ae611d54ca69e9f967
• https://git.kernel.org/stable/c/64e5fd96330df2ad278d1c4edcca581f26e5f76e
• https://git.kernel.org/stable/c/80fc836f3ebe2f2d2d2c80c698b7667974285a04
• https://git.kernel.org/stable/c/f505e6c91e7a22d10316665a86d79f84d9f0ba76
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html

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