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CVE-2026-68089: iio: core: fix uninitialized data in debugfs

• 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: 2026-08-10 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: iio: core: fix uninitialized data in debugfs If *ppos is non-zero then simple_write_to_buffer() will not initialize the start of buf[]. Non zero values for *ppos aren't going to work anyway. Test for them at the start of the function and return -EINVAL.

Affected products

• Linux kernel: 6.15 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/89fbd3e32dffb6227f936a9578e6eb4632aa4580
• https://git.kernel.org/stable/c/ab92ed206d41fd171ebd37bc46360d9f2140d043
• https://git.kernel.org/stable/c/e166a8cfb28a3d0da260dd70cae274eb8c7cec8d

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