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CVE-2026-90197

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

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected 344ff358495706abc7aac1e0c59a5bb16b350307 before 324cc98b71f0d3dee7367ef3c669fd80747e71b6; affected 344ff358495706abc7aac1e0c59a5bb16b350307 before 2d92c250815cba6bffd64f0125fac7afe4fa6ce0; affected 344ff358495706abc7aac1e0c59a5bb16b350307 before 3efb7f6491526f5012f9ec94769e9ed832feeef8
Linux / Linuxaffected 6.18; unaffected 0 before 6.18; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through *

CWE

No CWE identifiers supplied.

References