What’s Vulnerable › Vulnerabilities

CVE-2026-89575: dm raid1: reserve space for NUL-terminator in build_constructor_string()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-11 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: dm raid1: reserve space for NUL-terminator in build_constructor_string() Reserve space for the termination NUL after the maximum 20 decimal digits of a long long value to avoid buffer overflow in sprintf().

Affected products

• Linux kernel: 2.6.31 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/01a0276706c7b6fb758a8e2ff9cf221a3dfcae97
• https://git.kernel.org/stable/c/0a3657ebd6b517b60cdc5123894047616974e25b
• https://git.kernel.org/stable/c/1fcc9f9f35653c5ee1a8b144ec96ff3fc48532f7
• https://git.kernel.org/stable/c/35ba81c93fe7392c973af9881640180490e76f34
• https://git.kernel.org/stable/c/644140527ae494cedf3b5c0ecd16287deaea7a66
• https://git.kernel.org/stable/c/73c37fe54cd056d07461b142ab0b8b81e1ef6ad8
• https://git.kernel.org/stable/c/7b035983b895db3ae01d9855963d42541db42125
• https://git.kernel.org/stable/c/f79b53ca3a68a46c6fc3b30b148d1dfb1b33ea8b

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