CVE-2024-46852

Katalog CVE

CVSS 7.8 · High EPSS 0,22%

Kerentanan Off-by-one Error pada debian linux, linux kernel. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

27 September 2024

Terakhir diubah

4 Agustus 2026

Status NVD

Modified

CVSS 3.1

7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-193: Off-by-one Error

EPSS (30 hari)

0,22% peluang dieksploitasi; lebih tinggi dari 11,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/79cce5e81d20fa9ad553be439d665ac3302d3c95 patch
• https://git.kernel.org/stable/c/84175dc5b2c932266a50c04e5ce342c30f817a2f patch
• https://git.kernel.org/stable/c/e79050882b857c37634baedbdcf7c2047c24cbff patch
• https://git.kernel.org/stable/c/ea5ff5d351b520524019f7ff7f9ce418de2dad87 patch
• https://git.kernel.org/stable/c/eb7fc8b65cea22f9038c52398c8b22849e9620ea patch
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html mailing list · advisory pihak ketiga