CVE-2025-38736 — Out-of-bounds Read in Linux
Severity
7.1HIGHNVD
EPSS
0.0%
top 95.84%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 5
Latest updateSep 9
Description
In the Linux kernel, the following vulnerability has been resolved:
net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization
Syzbot reported shift-out-of-bounds exception on MDIO bus initialization.
The PHY address should be masked to 5 bits (0-31). Without this
mask, invalid PHY addresses could be used, potentially causing issues
with MDIO bus operations.
Fix this by masking the PHY address with 0x1f (31 decimal) to ensure
it stays within the valid range.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitability: 1.8 | Impact: 5.2
Affected Packages3 packages
▶CVEListV5linux/linux75947d3200de98a9ded9ad8972e02f1a177097fe — fcb4ce9f729c1d08e53abf9d449340e24c3edee6+8
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-9pqv-7h63-32cr: In the Linux kernel, the following vulnerability has been resolved:
net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization
Syzbot r↗2025-09-05
OSV▶
CVE-2025-38736: In the Linux kernel, the following vulnerability has been resolved: net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization Syzbot rep↗2025-09-05
📋Vendor Advisories
3Debian▶
CVE-2025-38736: linux - In the Linux kernel, the following vulnerability has been resolved: net: usb: a...↗2025