CVE-2024-47676
Linux Kernel Huawei Total Address Space 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().
INFO
Published Date :
Oct. 21, 2024, 12:15 p.m.
Last Modified :
Oct. 22, 2024, 4:12 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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CVE-2024-47676.
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CVE-2024-47676 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-47676 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Oct. 22, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/98b74bb4d7e96b4da5ef3126511febe55b76b807 No Types Assigned https://git.kernel.org/stable/c/98b74bb4d7e96b4da5ef3126511febe55b76b807 Patch Changed Reference Type https://git.kernel.org/stable/c/d59ebc99dee0a2687a26df94b901eb8216dbf876 No Types Assigned https://git.kernel.org/stable/c/d59ebc99dee0a2687a26df94b901eb8216dbf876 Patch Changed Reference Type https://git.kernel.org/stable/c/e897d184a8dd4a4e1f39c8c495598e4d9472776c No Types Assigned https://git.kernel.org/stable/c/e897d184a8dd4a4e1f39c8c495598e4d9472776c Patch Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.10.13 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.2 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added 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(). Added Reference kernel.org https://git.kernel.org/stable/c/e897d184a8dd4a4e1f39c8c495598e4d9472776c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d59ebc99dee0a2687a26df94b901eb8216dbf876 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/98b74bb4d7e96b4da5ef3126511febe55b76b807 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-47676 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-47676
weaknesses.