CVE-2026-90197 (GCVE-0-2026-90197)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:07 – Updated: 2026-09-17 16:07
VLAI
Title
HID: haptic: don't write an uninitialized value to unhandled usages
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 344ff358495706abc7aac1e0c59a5bb16b350307 , < 324cc98b71f0d3dee7367ef3c669fd80747e71b6 (git)
Affected: 344ff358495706abc7aac1e0c59a5bb16b350307 , < 2d92c250815cba6bffd64f0125fac7afe4fa6ce0 (git)
Affected: 344ff358495706abc7aac1e0c59a5bb16b350307 , < 3efb7f6491526f5012f9ec94769e9ed832feeef8 (git)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: haptic: don\u0027t write an uninitialized value to unhandled usages\n\nfill_effect_buf() initializes value only for the four haptic usages\nhandled by its switch, but writes it to field-\u003evalue[] for every usage.\nAn unhandled usage can therefore receive either an uninitialized value\nor one left over from the previous usage. hid_output_report() then\nserializes that value into the effect\u0027s report buffer.\n\nSkip unhandled usages instead. This also matches switch_mode(), which\nonly updates fields it recognizes.\n\nFound with Clang\u0027s -Wconditional-uninitialized."
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    "dateReserved": "2026-09-11T19:38:34.792Z",
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          }
        ],
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        "metrics": {},
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      "cve": "CVE-2026-90197",
      "id": "CVE-2026-90197",
      "initial_release_date": "2026-09-18T00:20:05Z",
      "product_status:known_not_affected": "347",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90197",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90197.json",
      "version": "4"
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}



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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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