{"id":"CVE-2026-63916","title":"HID: wacom: Fix OOB write in wacom_hid_set_device_mode()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: Fix OOB write in wacom_hid_set_device_mode()\n\nwacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE\nusage is always located in the first f…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 2add311d99646c9d235b2c44f9c169ba30f5db3a","Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf","Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 5716a293fb19d382ca2336e08fd28a619a5f3c25","Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < ed598de9f61582902406d352d99f2073d8e00298","Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 43e7c02d6090a82fd60d63491f6871aec906345e","Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < b8338111e14183972359009c12d0dbd81d2e1e16","Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 5db3fca0cec7b33bc5379411d0a60d792c9f9bc0","Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < c0a8899e02ddebd51e2589835182c239c2e224ae","Linux 3.18"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:33:16.082526Z"},"published":"2026-07-19","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:11.259Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63916","references":[{"url":"https://git.kernel.org/stable/c/2add311d99646c9d235b2c44f9c169ba30f5db3a"},{"url":"https://git.kernel.org/stable/c/83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf"},{"url":"https://git.kernel.org/stable/c/5716a293fb19d382ca2336e08fd28a619a5f3c25"},{"url":"https://git.kernel.org/stable/c/ed598de9f61582902406d352d99f2073d8e00298"},{"url":"https://git.kernel.org/stable/c/43e7c02d6090a82fd60d63491f6871aec906345e"},{"url":"https://git.kernel.org/stable/c/b8338111e14183972359009c12d0dbd81d2e1e16"},{"url":"https://git.kernel.org/stable/c/5db3fca0cec7b33bc5379411d0a60d792c9f9bc0"},{"url":"https://git.kernel.org/stable/c/c0a8899e02ddebd51e2589835182c239c2e224ae"}],"tags":["cve.org"],"epss":0.00354,"epssPercentile":0.27561,"ingestedAt":"2026-10-16T17:24:46.775Z","slug":"CVE-2026-63916","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nHID: wacom: Fix OOB write in wacom_hid_set_device_mode()\n\nwacom_hid_set_device_mode() currently assumes that the HID_DG_INPUTMODE\nusage is always located in the first field (field[0]) of the feature report.\nHowever, a device can specify HID_DG_INPUTMODE in a different field.\n\nIf HID_DG_INPUTMODE is in a field other than the first one and the first\nfield has a report_count smaller than the usage_index of HID_DG_INPUTMODE,\nthis leads to an out-of-bounds write to r->field[0]->value.\n\nFix this by storing the field index of HID_DG_INPUTMODE in 'struct\nhid_data' during feature mapping.  In wacom_hid_set_device_mode(), use\nthis stored field index to access the correct field and add bounds\nchecks to ensure both the field index and the value index are within\nvalid ranges before writing.\n\n## Affected\n\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 2add311d99646c9d235b2c44f9c169ba30f5db3a`\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 83bd8a5756a3c4a413ed8f6253f9eb2821e1ccaf`\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 5716a293fb19d382ca2336e08fd28a619a5f3c25`\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < ed598de9f61582902406d352d99f2073d8e00298`\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 43e7c02d6090a82fd60d63491f6871aec906345e`\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < b8338111e14183972359009c12d0dbd81d2e1e16`\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < 5db3fca0cec7b33bc5379411d0a60d792c9f9bc0`\n- `Linux >= 5ae6e89f7409cb5d218bb728326eba9c650d9700 < c0a8899e02ddebd51e2589835182c239c2e224ae`\n- `Linux 3.18`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}