CVE-2026-23078
Published: February 10, 2026Last modified: February 20, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: scarlett2: Fix buffer overflow in config retrieval The scarlett2_usb_get_config() function has a logic error in the endianness conversion code that can cause buffer overflows when count > 1. The code checks `if (size == 2)` where `size` is the total buffer size in bytes, then loops `count` times treating each element as u16 (2 bytes). This causes the loop to access `count * 2` bytes when the buffer only has `size` bytes allocated. Fix by checking the element size (config_item->size) instead of the total buffer size. This ensures the endianness conversion matches the actual element type.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.163-r0) |
| 25 LTS | linux-lts | Fixed (6.12.73-r0) | |
| Stream | linux-lts | Fixed (6.12.71-r0) |
References
- https://git.kernel.org/stable/c/27049f50be9f5ae3a62d272128ce0b381cb26a24
- https://git.kernel.org/stable/c/31a3eba5c265a763260976674a22851e83128f6d
- https://git.kernel.org/stable/c/51049f6e3f05d70660e2458ad3bb302a3721b751
- https://git.kernel.org/stable/c/6f5c69f72e50d51be3a8c028ae7eda42c82902cb
- https://git.kernel.org/stable/c/91a756d22f0482eac5bedb113c8922f90b254449
- https://git.kernel.org/stable/c/d5e80d1f97ae55bcea1426f551e4419245b41b9c