HOMEVULNERABILITIESCVE-2026-43224
MEDIUM

CVE-2026-43224

Published: May 6, 2026· Updated: May 8, 2026

5.5
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-43224 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3
PATCHhttps://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60
PATCHhttps://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9

All References (3)

→
https://git.kernel.org/stable/c/a983aae397767e9da931128ff2b5bf9066513ce3Patch
→
https://git.kernel.org/stable/c/ef075c1464ac9047e2cf7d23cb020bfd0b8e4b60Patch
→
https://git.kernel.org/stable/c/f1ae403324311e143ef20e53cf9a5f01e312f7c9Patch

Quick Facts

CVE IDCVE-2026-43224
CVSS Score5.5 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 6, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-43224 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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