HID: wacom: validate report length in wacom_intuos_pro2_bt_irq
In the Linux kernel, the following vulnerability has been resolved: HID: wacom: validate report length in wacom_intuos_pro2_bt_irq wacom_intuos_pro2_bt_irq() receives the wire report length in `len` but never consults it before parsing. After the report-id gate it unconditionally calls wacom_intuos_pro2_bt_pen() and then, selected by features.type, a fixed chain of sub-parsers, none of which receive `len`: wacom_intuos_pro2_bt_pen(wacom); if (type == INTUOSP2_BT || type == INTUOSP2S_BT) { wacom_intuos_pro2_bt_touch(wacom); wacom_intuos_pro2_bt_pad(wacom); wacom_intuos_pro2_bt_battery(wacom); } else { wacom_intuos_gen3_bt_pad(wacom); wacom_intuos_gen3_bt_battery(wacom); } Each sub-parser dereferences wacom->data at fixed offsets. The furthest byte touched on each branch is: INTUOSP2_BT / INTUOSP2S_BT: wacom_intuos_pro2_bt_pad() reads data[285] (the touchring byte), so the report must be at least 286 bytes; INTUOSHT3_BT ("gen3"): wacom_intuos_gen3_bt_battery() reads data[45], so the report must be at least 46 bytes. features.type is selected from the VID/PID id_table entry and wacom_setup_device_quirks() force-registers the pen/pad/touch inputs for that type independent of the report descriptor, so a malicious or malfunctioning paired/spoofed Bluetooth peripheral can advertise that VID/PID and send an undersized report that still satisfies the data[0] == 0x80/0x81 gate. The driver then reads past the received report and forwards the bytes to userspace via evdev (MSC_SERIAL / AB
CVE-2026-89999
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89999
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "d2844f3fcd058113acbe0aa110ab13ef28b98d9f",
"versionType": "git"
},
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "1bfc0547b81d5861443420d19b5ed2fd533cd17f",
"versionType": "git"
},
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "84781a1f3c5dc6650480be9329e6e8528939eaa0",
"versionType": "git"
},
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "96dd0af7597aba2d80cc97e2f66e8b72d30ba125",
"versionType": "git"
},
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "114af803e409a68e52516810ecd24df4d8ce0c68",
"versionType": "git"
},
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "74ec08f7b81c2726578039ca6dea0fec136c38ea",
"versionType": "git"
},
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "0cdc6cb242dd8d2731956fdf3390de094482a4b2",
"versionType": "git"
},
{
"status": "affected",
"version": "4922cd26f03c1c71bf7dd6cbdb638e7e36a4a50b",
"lessThan": "a8e04f3f894ccb52cfcd7e60125a9f35da4a616d",
"versionType": "git"
}
],
"programFiles": [
"drivers/hid/wacom_wac.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/hid/wacom_wac.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89999
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36432 · Revision 1
- Added to Heist Feed
- Publisher date