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CVE-2026-43224

kernel: io_uring/zcrx: fix sgtable leak on mapping failures

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 6, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's io_uring/zcrx subsystem. Under specific conditions, a failure in memory mapping operations can result in a scatter-gather table (sgtable), which manages memory regions, not being properly freed. This memory leak could lead to resource exhaustion and potentially cause system instability or a denial of service (DoS).

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-772 · Missing Release of Resource after Effective Lifetime