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CVE-2025-40193

xtensa: simdisk: add input size check in proc_write_simdisk PUBLISHED

Description (CNA)

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()")

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected b6c7e873daf765e41233b9752083b66442703b7a before f40405ccfb87b71175f2d5d004c0b8a0aebcc2cf; affected b6c7e873daf765e41233b9752083b66442703b7a before 151bd88859474cdaccc1e4c8b21fbf72dbba2ab4; affected b6c7e873daf765e41233b9752083b66442703b7a before d381de7fd4cdc928ede96987dc64b133e6480dd6; affected b6c7e873daf765e41233b9752083b66442703b7a before a0c2c36d864ef3676b05cfd8c58b72ee3214cb1a; affected b6c7e873daf765e41233b9752083b66442703b7a before 5d5f08fd0cd970184376bee07d59f635c8403f63
Linux / Linuxaffected 3.9; unaffected 0 before 3.9; unaffected 6.1.157 through 6.1.*; unaffected 6.6.113 through 6.6.*; unaffected 6.12.54 through 6.12.*; unaffected 6.17.4 through 6.17.*; unaffected 6.18 through *

CWE

No CWE identifiers supplied.

References