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CVE-2025-38481

Description

In the Linux kernel, the following vulnerability has been resolved:comedi: Fail COMEDI_INSNLIST ioctl if n_insns is too largeThe handling of the COMEDI_INSNLIST ioctl allocates a kernel buffer tohold the array of struct comedi_insn, getting the length from then_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 toolarge.Avoid that by failing with an -EINVAL error if the supplied n_insnsvalue is unreasonable.Define the limit on the n_insns value in the MAX_INSNS macro. Setthis to the same value as MAX_SAMPLES (65536), which is the maximumallowed sum of the values of the member n in the array of structcomedi_insn, and sensible comedi instructions will have an n of atleast 1.

Risk Information

Base Score
5.5
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.022

Associated Vulnerability

VulnerabilityOS Platform
linux security update(DSA-5973-1) DSA-5973-1 linux-cpupower_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-doc_6.1.147-1_all.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-doc-6.1_6.1.147-1_all.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-686-dbg_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-686-pae-dbg_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-cpupower_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-amd64-signed-template_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-cloud-amd64-dbg_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-i386-signed-template_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-rt-686-pae-dbg_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-rt-amd64-dbg_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-image-amd64-dbg_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-config-6.1_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-config-6.1_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-compiler-gcc-12-x86_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-kbuild-6.1_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 libcpupower1_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 libcpupower1_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 libcpupower-dev_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 libcpupower-dev_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 hyperv-daemons_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 hyperv-daemons_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 bpftool_7.1.0+6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-compiler-gcc-12-x86_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 usbip_2.0+6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 usbip_2.0+6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 rtla_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 rtla_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-source-6.1_6.1.147-1_all.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-source_6.1.147-1_all.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-libc-dev_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 bpftool_7.1.0+6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-libc-dev_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-perf_6.1.147-1_amd64.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-kbuild-6.1_6.1.147-1_i386.debLinux
linux security update(DSA-5973-1) DSA-5973-1 linux-perf_6.1.147-1_i386.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234