CVE-2024-38587: speakup: Fix sizeof() vs ARRAY_SIZE() bug

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-19 · updated 2026-10-15
Weakness: CWE-129

Description

In the Linux kernel, the following vulnerability has been resolved: speakup: Fix sizeof() vs ARRAY_SIZE() bug The "buf" pointer is an array of u16 values. This code should be using ARRAY_SIZE() (which is 256) instead of sizeof() (which is 512), otherwise it can the still got out of bounds.

Affected products

Linux kernel: from 4.19.313 before 4.19.316; from 5.4.275 before 5.4.278; from 5.10.216 before 5.10.219; from 5.15.157 before 5.15.161; from 6.1.88 before 6.1.93; from 6.6.29 before 6.6.33 — fixed in 4.19.316, 5.10.219, 5.15.161, 5.4.278, 6.1.93, 6.6.33

How to fix

Upgrade to a fixed version: Linux kernel 4.19.316, 5.10.219, 5.15.161, 5.4.278. Check the vendor advisory for mitigations.

References

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