comedi: aio_iiro_16: Fix bit shift out of bounds
In the Linux kernel, the following vulnerability has been resolved: comedi: aio_iiro_16: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: if ((1 << it->options[1]) & 0xdcfc) { However, `it->options[i]` is an unchecked `int` value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring `it->options[1]` to be within bounds before proceeding with the original test. Valid `it->options[1]` values that select the IRQ will be in the range [1,15]. The value 0 explicitly disables the use of interrupts.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.241, 5.15.190, 5.4.297, 6.1.147, 6.12.40, 6.15.8, 6.6.100
- CVEs
- CVE-2025-38529
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 04:24 UTC · Revision 1
Source evidence
comedi: aio_iiro_16: Fix bit shift out of bounds
core-osv · Original sourcePublished 16 Aug 2025, 11:12 UTC
In the Linux kernel, the following vulnerability has been resolved: comedi: aio_iiro_16: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: if ((1 << it->options[1]) & 0xdcfc) { However, `it->options[i]` is an unchecked `int` value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring `it->options[1]` to be within bounds before proceeding with the original test. Valid `it->options[1]` values that select the IRQ will be in the range [1,15]. The value 0 explicitly disables the use of interrupts.
osv:CVE-2025-38529
Kernel
Fixed versions: 5.4.297, 5.10.241, 5.15.190, 6.1.147, 6.6.100, 6.12.40, 6.15.8
Complete source record
{
"id": "e1a4e2f3ff21fcb752db3384d126f12f8d83d7c59783ee6df789eddfe35c564b",
"url": "https://osv.dev/vulnerability/CVE-2025-38529",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "comedi: aio_iiro_16: Fix bit shift out of bounds",
"summary": "In the Linux kernel, the following vulnerability has been resolved: comedi: aio_iiro_16: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: if ((1 << it->options[1]) & 0xdcfc) { However, `it->options[i]` is an unchecked `int` value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring `it->options[1]` to be within bounds before proceeding with the original test. Valid `it->options[1]` values that select the IRQ will be in the range [1,15]. The value 0 explicitly disables the use of interrupts.",
"evidence": "osv:CVE-2025-38529",
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"modified": "2026-10-28T02:30:33.282646816Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/43ddd82e6a91913cea1c078e782afd8de60c3a53",
"https://git.kernel.org/stable/c/5ac7c60439236fb691b8c7987390e2327bbf18fa",
"https://git.kernel.org/stable/c/66acb1586737a22dd7b78abc63213b1bcaa100e4",
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"https://git.kernel.org/stable/c/a88692245c315bf8e225f205297a6f4b13d6856a",
"https://git.kernel.org/stable/c/c593215385f0c0163015cca4512ed3ff42875d19",
"https://git.kernel.org/stable/c/e0f3c0867d7d231c70984f05c97752caacd0daba",
"https://git.kernel.org/stable/c/ff30dd3f15f443d2a0085b12ec2cc95d44f35fa7",
"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html",
"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38529.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-38529",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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"provider_metadata": {
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},
"related_cves": [
{
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 500264,
"published_at": "2025-08-16T11:12:22.447+00:00"
}