Bug 2393526 (CVE-2025-39719) - CVE-2025-39719 kernel: iio: imu: bno055: fix OOB access of hw_xlate array
Summary: CVE-2025-39719 kernel: iio: imu: bno055: fix OOB access of hw_xlate array
Keywords:
Status: NEW
Alias: CVE-2025-39719
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-09-05 18:04 UTC by OSIDB Bzimport
Modified: 2025-11-26 08:05 UTC (History)
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Description OSIDB Bzimport 2025-09-05 18:04:19 UTC
In the Linux kernel, the following vulnerability has been resolved:

iio: imu: bno055: fix OOB access of hw_xlate array

Fix a potential out-of-bounds array access of the hw_xlate array in
bno055.c.

In bno055_get_regmask(), hw_xlate was iterated over the length of the
vals array instead of the length of the hw_xlate array. In the case of
bno055_gyr_scale, the vals array is larger than the hw_xlate array,
so this could result in an out-of-bounds access. In practice, this
shouldn't happen though because a match should always be found which
breaks out of the for loop before it iterates beyond the end of the
hw_xlate array.

By adding a new hw_xlate_len field to the bno055_sysfs_attr, we can be
sure we are iterating over the correct length.


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