CVE-2026-90197

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux344ff358495706abc7aac1e0c59a5bb16b350307 < 324cc98b71f0d3dee7367ef3c669fd80747e71b6affected
LinuxLinux344ff358495706abc7aac1e0c59a5bb16b350307 < 2d92c250815cba6bffd64f0125fac7afe4fa6ce0affected
LinuxLinux344ff358495706abc7aac1e0c59a5bb16b350307 < 3efb7f6491526f5012f9ec94769e9ed832feeef8affected
LinuxLinux6.18affected
LinuxLinux0 < 6.18unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References