CVE-2025-40056

In the Linux kernel, the following vulnerability has been resolved: vhost: vringh: Fix copy_to_iter return value check The return value of copy_to_iter can't be negative, check whether the copied length is equal to the requested length instead of checking for negative values.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-25)

Published

2025-10-28

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/439263376c2c4e126cac0d07e4987568de4eaba5
• https://git.kernel.org/stable/c/68aac2b335d474b938d154b9c95cbc58838cb2ce
• https://git.kernel.org/stable/c/781226e11d5bdea0d69c7b5aa3cda874093c73b8
• https://git.kernel.org/stable/c/b3a950d236e98440c07405ba597b11bce56a8050
• https://git.kernel.org/stable/c/bd71e7e0a612740e4de5524880c7cd40293af5f7

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