CVE-2025-39730

NFS: Fix filehandle bounds checking in nfs_fh_to_dentry()

HIGH

7.8

CVSS Score

Published: September 7, 2025 at 03:16 PM UTC

Updated: October 19, 2026 at 09:10 PM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() The function needs to check the minimal filehandle length before it can access the embedded filehandle.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

All versions4.13 ≤ v < 5.4.2975.11 ≤ v < 5.15.1905.16 ≤ v < 6.1.1485.5 ≤ v < 5.10.2416.13 ≤ v < 6.15.106.16 ≤ v < 6.16.16.2 ≤ v < 6.6.1026.7 ≤ v < 6.12.4220fa19027286983ab2734b5910c4a687436e0c314.13

Vendor states this is fixed in 12ad3def2e5e0b120e3d0cb6ce8b7b796819ad40 (fixed)

Vendor states this is fixed in 2ad40b7992aa26bc631afc1a995b0e3ddc30de3f (fixed)

Vendor states this is fixed in 3570ef5c31314c13274c935a20b91768ab5bf412 (fixed)

Vendor states this is fixed in 763810bb883cb4de412a72f338d80947d97df67b (fixed)

Vendor states this is fixed in 7dd36f7477d1e03a1fcf8d13531ca326c4fb599f (fixed)

Vendor states this is fixed in 7f8eca87fef7519e9c41f3258f25ebc2752247ee (fixed)

Vendor states this is fixed in b7f7866932466332a2528fda099000b035303485 (fixed)

Vendor states this is fixed in cb09afa0948d96b1e385d609ed044bb1aa043536 (fixed)

Vendor states this is fixed in ef93a685e01a281b5e2a25ce4e3428cf9371a205 (fixed)

Vendor states this is fixed in 4.13 (unaffected)

Vendor states this is fixed in 5.10.241 (unaffected)

Vendor states this is fixed in 5.15.190 (unaffected)

Vendor states this is fixed in 5.4.297 (unaffected)

Vendor states this is fixed in 6.1.148 (unaffected)

Vendor states this is fixed in 6.12.42 (unaffected)

Vendor states this is fixed in 6.15.10 (unaffected)

Vendor states this is fixed in 6.16.1 (unaffected)

Vendor states this is fixed in 6.17 (unaffected)

Vendor states this is fixed in 6.6.102 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references