Linux Kernel usb-storage ene_ub6250 Race Condition Vulnerability
CVE-2026-90031 Published on September 16, 2026
usb-storage: ene_ub6250: fix race between scan work and probe
In the Linux kernel, the following vulnerability has been resolved:
usb-storage: ene_ub6250: fix race between scan work and probe
ene_ub6250_probe() calls usb_stor_probe2(), which starts the usb-storage
infrastructure and schedules the delayed scan work. The driver then
calls ene_get_card_type(), which sends an ENE command through
ene_send_scsi_cmd() and the usb-storage bulk transfer helpers.
Both the delayed scan work, through usb_stor_Bulk_max_lun(), and
ene_get_card_type() use us->current_urb. The scan work serializes this
access with us->dev_mutex, but the ENE card-type probe does not. If the
scan work runs while ene_get_card_type() is still using us->current_urb,
usb_submit_urb() warns that the URB is already active.
Serialize ene_get_card_type() with us->dev_mutex, matching the locking
used by the scan path.
Products Associated with CVE-2026-90031
Want to know whenever a new CVE is published for Linux Kernel? stack.watch will email you.
Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 9cd335f4f41e84d1ab88d80150ffee8dee9650d7 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 8936d95dd04d34db96d4d1e3899eee52605bbedc is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 9c261a83131e241d67cb73ab578d0265bc19cfb5 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 9481bc04a8c351ed883a7f0e10939bbe9120ead7 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 5082546702c32a2700894d2c0ace784e038ef6a3 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 1c67f2ba9c5f7c5ab3670671c0d51c6504bcaf74 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 996c319b8bd5ada1f62daae0d331d0b23e0f2117 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 445fc368c6bc73eff0aeb3818cf5f355facfbb16 is affected.
- Before 5.10.270 is affected.
- Before 5.15.221 is affected.
- Before 6.1.188 is affected.
- Before 6.6.157 is affected.
- Before 6.12.110 is affected.
- Before 6.18.51 is affected.
- Before 7.2.5 is affected.
- Version 5.10.270, <= 5.10.* is unaffected.
- Version 5.15.221, <= 5.15.* is unaffected.
- Version 6.1.188, <= 6.1.* is unaffected.
- Version 6.6.157, <= 6.6.* is unaffected.
- Version 6.12.110, <= 6.12.* is unaffected.
- Version 6.18.51, <= 6.18.* is unaffected.
- Version 7.2.5, <= 7.2.* is unaffected.
- Version 7.3-rc2, <= * is unaffected.