In the Linux kernel, the following vulnerability has been resolved:
comedi: pcl726: Prevent invalid irq number
The reproducer passed in an irq number(0x80008000) that was too large,
which triggered the oob.
Added an interrupt number check to prevent users from passing in an irq
number that was too large.
If `it->options[1]` is 31, then `1 << it->options[1]` is still invalid
because it shifts a 1-bit into the sign bit (which is UB in C).
Possible solutions include reducing the upper bound on the
`it->options[1]` value to 30 or lower, or using `1U << it->options[1]`.
The old code would just not attempt to request the IRQ if the
`options[1]` value were invalid. And it would still configure the
device without interrupts even if the call to `request_irq` returned an
error. So it would be better to combine this test with the test below.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
08 Jan 2026, 15:11
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-125 | |
| References | () https://git.kernel.org/stable/c/0eb4ed2aa261dee228f1668dbfa6d87353e8162d - Patch | |
| References | () https://git.kernel.org/stable/c/5a33d07c94ba91306093e823112a7aa9727549f6 - Patch | |
| References | () https://git.kernel.org/stable/c/96cb948408b3adb69df7e451ba7da9d21f814d00 - Patch | |
| References | () https://git.kernel.org/stable/c/a3cfcd0c78c80ca7cd80372dc28f77d01be57bf6 - Patch | |
| References | () https://git.kernel.org/stable/c/bab220b0bb5af652007e278e8e8357f952b0e1ea - Patch | |
| References | () https://git.kernel.org/stable/c/d8992c9a01f81128f36acb7c5755530e21fcd059 - Patch | |
| References | () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory | |
| CPE | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
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| First Time |
Linux
Debian Debian debian Linux Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
03 Nov 2025, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
05 Sep 2025, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-05 18:15
Updated : 2026-01-08 15:11
NVD link : CVE-2025-39685
Mitre link : CVE-2025-39685
CVE.ORG link : CVE-2025-39685
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE
CWE-125
Out-of-bounds Read