CVE-2022-50230
- Source
- https://cve.org/CVERecord?id=CVE-2022-50230
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50230.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-50230
- Downstream
- Published
- 2025-06-18T11:04:06.716Z
- Modified
- 2026-03-20T11:47:18.691628Z
- Summary
- arm64: set UXN on swapper page tables
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
arm64: set UXN on swapper page tables
[ This issue was fixed upstream by accident in c3cee924bd85 ("arm64: head: cover entire kernel image in initial ID map") as part of a large refactoring of the arm64 boot flow. This simple fix is therefore preferred for -stable backporting ]
On a system that implements FEATEPAN, read/write access to the idmap is denied because UXN is not set on the swapper PTEs. As a result, idmapkptiinstallng_mappings panics the kernel when accessing __idmapkptiflag. Fix it by setting UXN on these PTEs.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50230.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/9283e708a9b8529e7aafac9ab5c5c79a9fab8846
- https://git.kernel.org/stable/c/c3cee924bd855184d15bc4aa6088dcf8e2c1394c
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50230.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-50230
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git