CVE-2026-43429
Published May 8, 2026
Modified May 12, 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.
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EPSS — Exploit Prediction
0.0001
Probability of exploitation
0.02%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other 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
Frequently Asked Questions
What is CVE-2026-43429? +
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.
How do I check if I'm vulnerable to CVE-2026-43429? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.