CVE-2025-38529

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < a88692245c315bf8e225f205297a6f4b13d6856aaffected
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < 5ac7c60439236fb691b8c7987390e2327bbf18faaffected
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < c593215385f0c0163015cca4512ed3ff42875d19affected
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < ff30dd3f15f443d2a0085b12ec2cc95d44f35fa7affected
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < 955e8835855fed8e87f7d8c8075564a1746c1b4caffected
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < e0f3c0867d7d231c70984f05c97752caacd0dabaaffected
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < 43ddd82e6a91913cea1c078e782afd8de60c3a53affected
LinuxLinuxad7a370c8be47247f68f7187cc82f4f25a347116 < 66acb1586737a22dd7b78abc63213b1bcaa100e4affected
LinuxLinux4.0affected
LinuxLinux0 < 4.0unaffected
LinuxLinux5.4.297 <= 5.4.*unaffected
LinuxLinux5.10.241 <= 5.10.*unaffected
LinuxLinux5.15.190 <= 5.15.*unaffected
LinuxLinux6.1.147 <= 6.1.*unaffected
LinuxLinux6.6.100 <= 6.6.*unaffected
LinuxLinux6.12.40 <= 6.12.*unaffected
LinuxLinux6.15.8 <= 6.15.*unaffected
LinuxLinux6.16 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References