CVE-2026-90197

HID: haptic: don't write an uninitialized value to unhandled usages

N/A
Published: September 17, 2026 at 04:07 PM UTC
Updated: October 19, 2026 at 09:19 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: HID: haptic: don't write an uninitialized value to unhandled usages fill_effect_buf() initializes value only for the four haptic usages handled by its switch, but writes it to field->value[] for every usage. An unhandled usage can therefore receive either an uninitialized value or one left over from the previous usage. hid_output_report() then serializes that value into the effect's report buffer. Skip unhandled usages instead. This also matches switch_mode(), which only updates fields it recognizes. Found with Clang's -Wconditional-uninitialized.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

344ff358495706abc7aac1e0c59a5bb16b3503076.18
Vendor states this is fixed in 2d92c250815cba6bffd64f0125fac7afe4fa6ce0 (fixed)
Vendor states this is fixed in 324cc98b71f0d3dee7367ef3c669fd80747e71b6 (fixed)
Vendor states this is fixed in 3efb7f6491526f5012f9ec94769e9ed832feeef8 (fixed)
Vendor states this is fixed in 6.18 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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