CVE-2026-63901: Linux kernel · USB: serial: digi_acceleport: fix memory corruption with small endpoints
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 30 Oct 2026, 15:36 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 19 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
- git.kernel.org/stable/c/fd34198c2e5d164b57a7dcd4692626fece319225 (opens in a new tab)
- git.kernel.org/stable/c/25b93d0f229a115ab120106f37b9454170d4cfd4 (opens in a new tab)
- git.kernel.org/stable/c/6ab1e9ae099577a1019312088309ecbad2da9a91 (opens in a new tab)
- git.kernel.org/stable/c/8a65db5edd7b63365e9c5b7d9f4b8f314696dc49 (opens in a new tab)
- git.kernel.org/stable/c/41b645e791099f0038225da5e2ca3ca31f00d435 (opens in a new tab)
- git.kernel.org/stable/c/062dcc0b324afd03b1406f157190804f105718bb (opens in a new tab)
- git.kernel.org/stable/c/9469419b12a100e7e2ccdda64ab45b8368456c8a (opens in a new tab)
- git.kernel.org/stable/c/cb3560e8eab1dfa1cac1ed52631adf8ec6ff2cd5 (opens in a new tab)