CVE-2026-43224
io_uring/zcrx: fix sgtable leak on mapping failures
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.
INFO
Published Date :
May 6, 2026, 12:16 p.m.
Last Modified :
May 8, 2026, 9:13 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel to a patched version.
- Ensure sgtable is freed even if mapping fails.
- Review error handling for io_populate_area_dma function.
- Verify the fix for sgtable leak in io_zcrx_map_area.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43224.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43224 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43224
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-43224 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43224 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
May. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.6 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.18 up to (excluding) 6.18.16 Added Reference Type kernel.org: https://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 06, 2026
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3 Added Reference https://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60 Added Reference https://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9