CVE-2026-72483
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
usb: host: max3421: Fix shift-out-of-bounds in max3421_hub_control()
In the Linux kernel, the following vulnerability has been resolved: usb: host: max3421: Fix shift-out-of-bounds in max3421_hub_control() The `max3421_hub_control()` function handles USB hub class requests to the virtual root hub. In the `default` branches of both the `ClearPortFeature` and `SetPortFeature` switch statements, it modifies `max3421_hcd->port_status` by left shifting 1 by the request's `value` parameter. However, it does not validate whether this shift will exceed the width of `port_status`. So if a malicious userspace task with access to the root hub via /dev/bus/usb/.../001 issues a USBDEVFS_CONTROL ioctl with `wValue` greater than or equal to 32, the left shift operation invokes shift-out-of-bounds undefined behavior. This results in arbitrary bit corruption of `port_status`, including the normally-immutable change bits, which can bypass internal state checks and confuse the hub status. Fix this by rejecting requests whose `value` exceeds the shift width before performing the shift. This issue was found using a KLEE-based symbolic execution tool for kernel drivers that I'm currently developing.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | e5fa9d8f40746ec3447335c9642c03410f5fd3af | Unavailable | None listed |
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | 08b1d4cab0230697bc74c63fc4e40170a7559c54 | Unavailable | None listed |
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | 3be5f24e8270ba53b3c814d13689bb8644c86237 | Unavailable | None listed |
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | d512bdefd241b98f4d7bcb5bab5614a86411fad4 | Unavailable | None listed |
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | 00dd025324b56d39d37e57a08f473dab3a660f30 | Unavailable | None listed |
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | 02d03c61e8a7b016956acb48e8a2512d16d87517 | Unavailable | None listed |
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | 4da073d57176d8e1c2bca34febfbc81d2560c1a5 | Unavailable | None listed |
| 2d53139f31626bad6f8983d8e519ddde2cbba921 | affected | git | cff06b03b530ae1fe8a13e93a7848f2130e00fb4 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.16 | Unavailable | None listed |
| 5.10.261 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.97 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.40 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |