CVE-2024-47676
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-47676
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-47676.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-47676
- Downstream
- Related
- Published
- 2024-10-21T12:15:04Z
- Modified
- 2025-08-09T19:01:29Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
mm/hugetlb.c: fix UAF of vma in hugetlb fault pathway
Syzbot reports a UAF in hugetlbfault(). This happens because vmfanonprepare() could drop the per-VMA lock and allow the current VMA to be freed before hugetlbvmaunlockread() is called.
We can fix this by using a modified version of vmfanonprepare() that doesn't release the VMA lock on failure, and then release it ourselves after hugetlbvmaunlock_read().
- References