Vulnerability Database

318,756

Total vulnerabilities in the database

CVE-2025-38481

In the Linux kernel, the following vulnerability has been resolved:

comedi: Fail COMEDI_INSNLIST ioctl if n_insns is too large

The handling of the COMEDI_INSNLIST ioctl allocates a kernel buffer to hold the array of struct comedi_insn, getting the length from the n_insns member of the struct comedi_insnlist supplied by the user. The allocation will fail with a WARNING and a stack dump if it is too large.

Avoid that by failing with an -EINVAL error if the supplied n_insns value is unreasonable.

Define the limit on the n_insns value in the MAX_INSNS macro. Set this to the same value as MAX_SAMPLES (65536), which is the maximum allowed sum of the values of the member n in the array of struct comedi_insn, and sensible comedi instructions will have an n of at least 1.

  • Published: Jul 28, 2025
  • Updated: Jan 8, 2026
  • CVE: CVE-2025-38481
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

No CWE or OWASP classifications available.

Software From Fixed in
linux / linux_kernel 2.6.29 5.4.297
linux / linux_kernel 5.5 5.10.241
linux / linux_kernel 5.11 5.15.190
linux / linux_kernel 5.16 6.1.147
linux / linux_kernel 6.2 6.6.100
linux / linux_kernel 6.7 6.12.40
linux / linux_kernel 6.13 6.15.8
linux / linux_kernel 6.16-rc1 6.16-rc1.x
linux / linux_kernel 6.16-rc2 6.16-rc2.x
linux / linux_kernel 6.16-rc3 6.16-rc3.x
linux / linux_kernel 6.16-rc4 6.16-rc4.x
linux / linux_kernel 6.16-rc5 6.16-rc5.x
linux / linux_kernel 6.16-rc6 6.16-rc6.x
debian / debian_linux 11.0 11.0.x