CVE-2026-43429
Published: May 9, 2026Last modified: May 9, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: USB: usbtmc: Use usb_bulk_msg_killable() with user-specified timeouts The usbtmc driver accepts timeout values specified by the user in an ioctl command, and uses these timeouts for some usb_bulk_msg() calls. Since the user can specify arbitrarily long timeouts and usb_bulk_msg() uses unkillable waits, call usb_bulk_msg_killable() instead to avoid the possibility of the user hanging a kernel thread indefinitely.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.80-r0) |
References
- https://git.kernel.org/stable/c/0535f84cb94c9d8bcba0a2a5b3fac81b7d97235d
- https://git.kernel.org/stable/c/39bd4097292fd8564cf2cfba9356f8ab11e38d12
- https://git.kernel.org/stable/c/6cb7dc91f057dd8ce44f6caa2995d8e22784ed0a
- https://git.kernel.org/stable/c/72c0a063489be183cfb99e7050aaef503bdb6449
- https://git.kernel.org/stable/c/7784caa413a89487dd14dd5c41db8753483b2acb
- https://git.kernel.org/stable/c/7fa72c369c23c27d1f64883c1e276af950557fb1
- https://git.kernel.org/stable/c/d4f1c45bdff3f393f9ab7e76795901c442b9eb76
- https://git.kernel.org/stable/c/e14a0dcdf468c3ad616bb06696c7c64c36e736d8