Vulnerability Description
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 hugetlb_fault(). This happens because vmf_anon_prepare() could drop the per-VMA lock and allow the current VMA to be freed before hugetlb_vma_unlock_read() is called. We can fix this by using a modified version of vmf_anon_prepare() that doesn't release the VMA lock on failure, and then release it ourselves after hugetlb_vma_unlock_read().
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.9, < 6.10.13 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/98b74bb4d7e96b4da5ef3126511febe55b76b807Patch
- https://git.kernel.org/stable/c/d59ebc99dee0a2687a26df94b901eb8216dbf876Patch
- https://git.kernel.org/stable/c/e897d184a8dd4a4e1f39c8c495598e4d9472776cPatch
FAQ
What is CVE-2024-47676?
CVE-2024-47676 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 hugetlb_fault(). This happens because vmf_anon_prep...
How severe is CVE-2024-47676?
CVE-2024-47676 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-47676?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.