CVE-2021-47567
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47567
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47567.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47567
- Downstream
- Published
- 2024-05-24T15:15:21Z
- Modified
- 2025-09-18T15:47:52Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
powerpc/32: Fix hardlockup on vmap stack overflow
Since the commit c118c7303ad5 ("powerpc/32: Fix vmap stack - Do not activate MMU before reading task struct") a vmap stack overflow results in a hard lockup. This is because emergency_ctx is still addressed with its virtual address allthough data MMU is not active anymore at that time.
Fix it by using a physical address instead.
- References