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 Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 27, 2026 | Jul 27, 2026 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-image-awsUpgrade linux-image-azure-fdeUpgrade linux-image-realtimeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-oem-24.04bUpgrade linux-image-oracleUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-lowlatency-64kUpgrade linux-image-virtualUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-lowlatencyUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-6.11.0-1015-oemUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-oem-24.04aUpgrade linux-image-raspiUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-6.11.0-1010-lowlatencyUpgrade linux-image-azureUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-gcpUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-genericUpgrade linux-image-oracle-64kUpgrade linux-image-oem-24.04Upgrade linux-image-6.11.0-1009-azureUpgrade linux-image-generic-64k | Feb 20, 2025 | Oct 21, 2024 |
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