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VulnerabilityPublished

CVE-2026-63901: Linux kernel · USB: serial: digi_acceleport: fix memory corruption with small endpoints

Affects Linux kernelSource GCVE Database

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Not known to be exploited.

Data as of 30 Oct 2026, 15:36 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

AI-suggested

A fix has been implemented in the Linux kernel to add the missing bulk-out buffer size sanity checks. Users should apply the official kernel updates that include this fix to mitigate the vulnerability.

Description

A memory corruption vulnerability in the Linux kernel's USB serial driver for digi_acceleport has been fixed. The issue involved missing sanity checks on bulk-out buffer sizes, which could lead to out-of-bounds memory access or slab corruption if a malicious USB device reported smaller buffer sizes than expected.

References

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