Linux
CVE-2026-99252: In the Linux kernel, the following vulnerability has been resolved: io_uring/mpscq: disable preemption while pushing A push makes the node the new tail, and t
CVE-2026-99252 Nov 3, 2026 Source: Vendor
In the Linux kernel, the following vulnerability has been resolved:
io_uring/mpscq: disable preemption while pushing
A push makes the node the new tail, and then links it to its predecessor.
In between the queue isn't empty, but mpscq_pop() can't get at the node.
The consumers deal with that by trying again, with a cond_resched() in
the loop to give a preempted producer the chance to finish.
cond_resched() doesn't do that if the consumer has a higher priority than
the producer and both have t
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-99252
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