CVE-2025-40291
Linux Kernel vulnerability analysis and mitigation

In the Linux kernel, the following vulnerability has been resolved:

io_uring: fix regbuf vector size truncation

There is a report of io_estimate_bvec_size() truncating the calculated number of segments that leads to corruption issues. Check it doesn't overflow "int"s used later. Rough but simple, can be improved on top.


SourceNVD

Related Linux Kernel vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-68753HIGH7.8
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  • linux-oem-6.14
NoYesJan 05, 2026
CVE-2025-68756HIGH7.1
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CVE-2025-68764MEDIUM5.5
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NoYesJan 05, 2026
CVE-2025-68758MEDIUM5.5
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  • linux-nvidia-tegra-5.15
NoYesJan 05, 2026
CVE-2025-68762N/AN/A
  • Linux KernelLinux Kernel
  • linux-aws-fips
NoYesJan 05, 2026

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