CVE-2026-68334

high

Description

In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix io_thread race in rxrpc_wake_up_io_thread() rxrpc_wake_up_io_thread() checks local->io_thread before waking it, but then reloads the pointer for wake_up_process(). local->io_thread is cleared with WRITE_ONCE() when the I/O thread exits, so the second load can see NULL even if the first load did not. Take a READ_ONCE() snapshot and use it for both the NULL check and the wake_up_process() call, as rxrpc_encap_rcv() already does.

References

https://git.kernel.org/stable/c/c9165e199f56997f2f2deb5d3ec2dfab98dfa288

https://git.kernel.org/stable/c/745fb794c3e933c023af9dbb5876a5e16ad2dc71

https://git.kernel.org/stable/c/092b42cf3f6013eec43607ecbcad674723649514

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-55435

Details

Source: Mitre, NVD

Published: 2026-08-10

Updated: 2026-08-17

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.4

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00206