CVE-2026-23294
kernel: bpf: Fix race in devmap on PREEMPT_RT
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Severity
ModerateRed Hat Product Security
CVSS
Review impact separately from score.
Published · March 25, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel. A race condition in the devmap component, specifically within the xdp_dev_bulk_queue (bq) on PREEMPT_RT kernels, allows multiple preemptible tasks on the same CPU to concurrently access the bq. This can lead to a use-after-free vulnerability, potentially resulting in memory corruption and system instability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CWE-364 · Signal Handler Race Condition