CVE-2026-43224 Details
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix sgtable leak on mapping failures In an unlikely case when io_populate_area_dma() fails, which could only happen on a PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA machine, io_zcrx_map_area() will have an initialised and not freed table. It was supposed to be cleaned up in the error path, but !is_mapped prevents that.
A vulnerability exists in the Linux kernel's io_uring/zcrx component, where a mapping failure can lead to a memory leak. This issue arises on machines with PAGE_POOL_32BIT_ARCH_WITH_64BIT_DMA, causing the io_zcrx_map_area() function to leave an initialized scatter-gather table unfreed. The table was intended to be cleared in the error handling process, but the condition '!is_mapped' prevents this cleanup.
Users can apply the patch available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.18, < 6.18.16 >= 6.19, < 6.19.6 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | Initial Analysis | [email protected] |
| May 6, 2026 | New CVE Received | kernel.org |