Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 0744cb9520aade37e78f69134f3111086158f1d2; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c876c437d188911685d8bed645416f2e86bd0354; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6787f1828f5616f17250e108c0031fb96fd2cfe6; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 92cca302a4eaf65d1b38b3fb600b4ee5eb856a51; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 02246d8b462fd9bd90bc7ae7d6cab1acf69bcb87; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 544ebb25bd58f67e821573412ab7a982b9e02211; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 0fecd89f979a8653b9a5b0816570329b7a94a081; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a4bc41504690b7d7064931909874f5b98cd148b6; affected 0 before 5.10.270; affected 0 before 5.15.221; affected 0 before 6.1.188; affected 0 before 6.6.157; affected 0 before 6.12.110; affected 0 before 6.18.52; affected 0 before 7.2.6 |
| Linux / Linux | unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0744cb9520aade37e78f69134f3111086158f1d2
- https://git.kernel.org/stable/c/c876c437d188911685d8bed645416f2e86bd0354
- https://git.kernel.org/stable/c/6787f1828f5616f17250e108c0031fb96fd2cfe6
- https://git.kernel.org/stable/c/92cca302a4eaf65d1b38b3fb600b4ee5eb856a51
- https://git.kernel.org/stable/c/02246d8b462fd9bd90bc7ae7d6cab1acf69bcb87
- https://git.kernel.org/stable/c/544ebb25bd58f67e821573412ab7a982b9e02211
- https://git.kernel.org/stable/c/0fecd89f979a8653b9a5b0816570329b7a94a081
- https://git.kernel.org/stable/c/a4bc41504690b7d7064931909874f5b98cd148b6