CVE-2026-98658 iio: proximity: aw96103: validate firmware data length
A missing length validation in the aw96103 proximity sensor driver allows out-of-bounds reads via crafted firmware, potentially causing crashes or information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-98658?
CVE-2026-98658 is a vulnerability in Linux, published on 18 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
iio: proximity: aw96103: validate firmware data length
The firmware parser reads a length from the binary header and then uses it to walk six-byte register/value entries. A truncated firmware image can make the parser read beyond the copied firmware buffer. A value smaller than the four-byte count field also underflows, producing a very large length.
Read the little-endian field with get_unaligned_le32(), as previously proposed by David Lechner. Validate the header size, reject an underflowed length, ensure the resulting payload is contained in the firmware image, and require it to contain whole register/value entries.
Which versions are affected by CVE-2026-98658?
How do I fix CVE-2026-98658?
Apply the vendor's patch.
Is CVE-2026-98658 being exploited?
There is no known exploitation of CVE-2026-98658 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-98658, DEBIAN-CVE-2026-98658, GHSA-h95c-5qhw-xc7v, UBUNTU-CVE-2026-98658.