What’s Vulnerable › Vulnerabilities

CVE-2026-64334: USB: serial: digi_acceleport: fix hard lockup on disconnect

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-25 · updated 2026-09-03
• Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: digi_acceleport: fix hard lockup on disconnect If submitting the OOB write urb fails persistently (e.g if the device is being disconnected) the driver would loop indefinitely with interrupts disabled. Check for urb submission errors when sending OOB commands to avoid hanging if, for example, open(), set_termios() or close() races with a physical disconnect. This is issue was flagged by Sashiko when reviewing an unrelated change to the driver.

Affected products

• Linux kernel: from 2.6.12.1 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39 — fixed in 5.10.261, 5.15.212, 6.1.178, 6.12.96, 6.18.39, 6.6.145

How to fix

Upgrade to a fixed version: Linux kernel 5.10.261, 5.15.212, 6.1.178, 6.12.96. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2067b3838da6e4af03bae3630414193188d754b2
• https://git.kernel.org/stable/c/2b7dc482f859f2d027db07ff0efc1c5df5b3451a
• https://git.kernel.org/stable/c/5a82d842e8c35227d7227f19e5e654df1451782c
• https://git.kernel.org/stable/c/5c1ea24b53bf3bfb859f0a05573997487975da23
• https://git.kernel.org/stable/c/6a8592ace932081ea11aea41c460a1ca0f6344a4
• https://git.kernel.org/stable/c/6e51147c2744d15730084dc89cc99180d3de4184
• https://git.kernel.org/stable/c/79bc131df0e50f8f663c1fdbbe952aaf193a8d39
• https://git.kernel.org/stable/c/bcfeae431db9986c2b313e6a760f2ac8df61e138

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