Answer in brief
CVE-2026-93189 records a Unknown severity vulnerability in HID: core: quiesce input in hid_hw_stop() to prevent use-after-free. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0744cb9520aade37e78f69134f3111086158f1d2 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c876c437d188911685d8bed645416f2e86bd0354 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <6787f1828f5616f17250e108c0031fb96fd2cfe6 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <92cca302a4eaf65d1b38b3fb600b4ee5eb856a51 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <02246d8b462fd9bd90bc7ae7d6cab1acf69bcb87 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <544ebb25bd58f67e821573412ab7a982b9e02211 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0fecd89f979a8653b9a5b0816570329b7a94a081 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a4bc41504690b7d7064931909874f5b98cd148b6 || >=0 <5.10.270 || >=0 <5.15.221 || >=0 <6.1.188 || >=0 <6.6.157 || >=0 <6.12.110 || >=0 <6.18.52 || >=0 <7.2.6 | 0744cb9520aade37e78f69134f3111086158f1d2, c876c437d188911685d8bed645416f2e86bd0354, 6787f1828f5616f17250e108c0031fb96fd2cfe6, 92cca302a4eaf65d1b38b3fb600b4ee5eb856a51, 02246d8b462fd9bd90bc7ae7d6cab1acf69bcb87, 544ebb25bd58f67e821573412ab7a982b9e02211, 0fecd89f979a8653b9a5b0816570329b7a94a081, a4bc41504690b7d7064931909874f5b98cd148b6, 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: HID: core: quiesce input in hid_hw_stop() to prevent use-after-free A driver's probe calls hid_device_io_start() to enable input delivery, then fails at a later initialization step and unwinds via hid_hw_stop(). The unwind frees struct hidraw via hidraw_disconnect() while in-flight HID reports may still be running on another CPU, dereferencing the freed object through hidraw_report_event(). syzbot reports the resulting use-after-free for the corsair-psu HID driver. Edward Adam Davis posted a per-driver fix for corsair-psu that adds an explicit hid_device_io_stop() before hid_hw_stop() in the probe error path ("hwmon: prevent packets from going to driver for probe", 2026-04-28). Auditing the tree shows 15 drivers call hid_device_io_start(); 7 also call hid_device_io_stop() and 8 do not: drivers calling hid_device_io_start() without a matching hid_device_io_stop() before hid_hw_stop(): drivers/hwmon/corsair-psu.c (fix posted by Edward) drivers/hwmon/corsair-cpro.c drivers/hwmon/nzxt-kraken3.c drivers/hwmon/nzxt-smart2.c drivers/hwmon/gigabyte_waterforce.c drivers/hid/hid-logitech-dj.c drivers/hid/hid-nintendo.c drivers/hid/hid-mcp2221.c Roughly half of all callers of the API are exposed. Centralize the quiesce in hid_hw_stop() so callers do not have to remember the matching stop: if a driver has left hdev->io_started true on entry, call hid_device_io_stop() before hid_disconnect(). For the 7 drivers that already call hid_device_io_stop() correctly, hdev->io_started is false on entry, the guard short-circuits, and behavior is unchanged. No Fixes: tag because the affected drivers gained their hid_device_io_start() calls independently over years; the bug is a class-wide API misuse rather than a regression from one commit.
Quoted source text, attributed separately from HOL analysis.