CVE-2024-47676

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/98b74bb4d7e96b4da5ef3126511febe55b76b807	Patch
https://git.kernel.org/stable/c/d59ebc99dee0a2687a26df94b901eb8216dbf876	Patch
https://git.kernel.org/stable/c/e897d184a8dd4a4e1f39c8c495598e4d9472776c	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-10-21 12:15

Updated : 2024-10-22 16:12

NVD link : CVE-2024-47676

Mitre link : CVE-2024-47676

CVE.ORG link : CVE-2024-47676

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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