CVE-2022-50232
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-50232
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50232.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-50232
- Downstream
- Published
- 2025-06-18T11:15:54Z
- Modified
- 2025-06-18T16:01:33Z
- Summary
- [none]
- 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, idmapkptiinstallngmappings panics the kernel when accessing _idmapkptiflag. Fix it by setting UXN on these PTEs.
- References
Affected packages
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source