Race condition in Linux kernel - CVE-2026-43214
Published: May 7, 2026
Vulnerability identifier: #VU130528
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43214
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper synchronization in __get_sregs2() when reading PDPTR registers during ioctl handling. A local user can issue a crafted ioctl request to cause a denial of service.
The issue is triggered when reading PDPTRs causes access to guest memory through memslot lookups without the required SRCU read-side protection.
Remediation
Install security update from vendor's repository.
External links
- https://git.kernel.org/stable/c/57536ff0a6bd69a5808d682925202babdb5ddc13
- https://git.kernel.org/stable/c/708e20c66b2761d878a2bc3c7534e7f814e4dec5
- https://git.kernel.org/stable/c/95d848dc7e639988dbb385a8cba9b484607cf98c
- https://git.kernel.org/stable/c/9f2bfea51151dfbb24b52f452eb3d5f5fe0e506e
- https://git.kernel.org/stable/c/b33f8d816950b10e7879cd8ffd7ae4b649ada4db
- https://git.kernel.org/stable/c/f621ca24f9f489e226e22560761b04884984133b