CVE-2026-68334
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.
Affected versions
Linux kernel versions
6.16
and later are affected. Fixed in
6.18.42,
7.1.6,
7.2
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-68334?
CVE-2026-68334 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.16 onward and has been patched in 6.18.42, 7.1.6 and 7.2. CVE-2026-68334 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-68334?
Yes. CVE-2026-68334 has been patched. Fixed versions include 6.18.42, 7.1.6 and 7.2. If you are running Linux kernel 6.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-68334 actively exploited?
No. CVE-2026-68334 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.