CVE-2025-38529comedi: aio_iiro_16: Fix bit shift out of bounds
- 7.1HighCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 91% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 4 months later
· 4 months later
Published
- 9 months later
· 9 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 91% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < a88692245c315bf8e225f205297a6f4b13d6856a
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < 5ac7c60439236fb691b8c7987390e2327bbf18fa
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < c593215385f0c0163015cca4512ed3ff42875d19
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < ff30dd3f15f443d2a0085b12ec2cc95d44f35fa7
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < 955e8835855fed8e87f7d8c8075564a1746c1b4c
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < e0f3c0867d7d231c70984f05c97752caacd0daba
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < 43ddd82e6a91913cea1c078e782afd8de60c3a53
- affected ad7a370c8be47247f68f7187cc82f4f25a347116 – < 66acb1586737a22dd7b78abc63213b1bcaa100e4
- affected 4.0
- unaffected < 4.0
- unaffected 5.4.297 – ≤ 5.4.*
- unaffected 5.10.241 – ≤ 5.10.*
- unaffected 5.15.190 – ≤ 5.15.*
- unaffected 6.1.147 – ≤ 6.1.*
- unaffected 6.6.100 – ≤ 6.6.*
- unaffected 6.12.40 – ≤ 6.12.*
- unaffected 6.15.8 – ≤ 6.15.*
- unaffected 6.16 – ≤ *
References
References10
- https://git.kernel.org/stable/c/a88692245c315bf8e225f205297a6f4b13d6856a (opens in a new tab)
- https://git.kernel.org/stable/c/5ac7c60439236fb691b8c7987390e2327bbf18fa (opens in a new tab)
- https://git.kernel.org/stable/c/c593215385f0c0163015cca4512ed3ff42875d19 (opens in a new tab)
- https://git.kernel.org/stable/c/ff30dd3f15f443d2a0085b12ec2cc95d44f35fa7 (opens in a new tab)
- https://git.kernel.org/stable/c/955e8835855fed8e87f7d8c8075564a1746c1b4c (opens in a new tab)
- https://git.kernel.org/stable/c/e0f3c0867d7d231c70984f05c97752caacd0daba (opens in a new tab)
- https://git.kernel.org/stable/c/43ddd82e6a91913cea1c078e782afd8de60c3a53 (opens in a new tab)
- https://git.kernel.org/stable/c/66acb1586737a22dd7b78abc63213b1bcaa100e4 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-26112 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-38529)Record last updated .