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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-46852 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: dma-buf: heaps: Fix off-by-one in CMA heap fault handler Until VM_DONTEXPAND was added in commit 1c1914d6e8c6 ("dma-buf: heaps: Don't track CMA dma-buf pages under RssFile") it was possible to obtain a mapping larger than the buffer size via mremap and bypass the overflow check in dma_buf_mmap_internal. When using such a mapping to attempt to fault past the end of the buffer, the CMA heap fault handler also checks the fault offset against the buffer size, but gets the boundary wrong by 1. Fix the boundary check so that we don't read off the end of the pages array and insert an arbitrary page in the mapping.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/79cce5e81d20fa9ad553be439d665ac3302d3c95 kernel.org Patch 
https://git.kernel.org/stable/c/84175dc5b2c932266a50c04e5ce342c30f817a2f kernel.org Patch 
https://git.kernel.org/stable/c/e79050882b857c37634baedbdcf7c2047c24cbff kernel.org Patch 
https://git.kernel.org/stable/c/ea5ff5d351b520524019f7ff7f9ce418de2dad87 kernel.org Patch 
https://git.kernel.org/stable/c/eb7fc8b65cea22f9038c52398c8b22849e9620ea kernel.org Patch 
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html CVE Mailing List  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-193 Off-by-one Error cwe source acceptance level NIST  

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-46852
NVD Published Date:
09/27/2024
NVD Last Modified:
05/05/2026
Source:
kernel.org