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CVE-2025-40193

UnknownEPSS 0.17%

Last modified

CVE-2025-40193 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: xtensa: simdisk: add input size check in proc_write_simdisk A malicious user could pass an arbitrarily bad value to memdup_user_nul(), potentially causing kernel crash. This follows the same pattern as commit ee76746387f6 ("netdevsim: prevent bad user input in nsim_dev_health_break_write()"). EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: xtensa: simdisk: add input size check in proc_write_simdisk A malicious user could pass an arbitrarily bad value to memdup_user_nul(), potentially causing kernel crash. This follows the same pattern as commit ee76746387f6 ("netdevsim: prevent bad user input in nsim_dev_health_break_write()")

Metrics

EPSS Probability
0.17%

6.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= b6c7e873daf765e41233b9752083b66442703b7a, < f40405ccfb87b71175f2d5d004c0b8a0aebcc2cf; >= b6c7e873daf765e41233b9752083b66442703b7a, < 151bd88859474cdaccc1e4c8b21fbf72dbba2ab4; >= b6c7e873daf765e41233b9752083b66442703b7a, < d381de7fd4cdc928ede96987dc64b133e6480dd6; >= b6c7e873daf765e41233b9752083b66442703b7a, < a0c2c36d864ef3676b05cfd8c58b72ee3214cb1a; >= b6c7e873daf765e41233b9752083b66442703b7a, < 5d5f08fd0cd970184376bee07d59f635c8403f63
LinuxLinux3.9

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-40193?
In the Linux kernel, the following vulnerability has been resolved: xtensa: simdisk: add input size check in proc_write_simdisk A malicious user could pass an arbitrarily bad value to memdup_user_nul(), potentially causing kernel crash. This follows the same pattern as commit ee76746387f6 ("netdevsim: prevent bad user input in nsim_dev_health_break_write()")
How severe is CVE-2025-40193?
Severity scoring for CVE-2025-40193 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2025-40193?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST