CVE-2024-46852

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-09-27. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

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

  • 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.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
12.0%
KEV
Not listed

Published

September 27, 2024

Last Modified

May 5, 2026

Advisory Details (6)

Auto-updated May 5, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 4008-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
generic

dma-buf: heaps: Fix off-by-one in CMA heap fault handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb7fc8b65cea22f9038c52398c8b22849e9620ea
generic

dma-buf: heaps: Fix off-by-one in CMA heap fault handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ea5ff5d351b520524019f7ff7f9ce418de2dad87
generic

dma-buf: heaps: Fix off-by-one in CMA heap fault handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e79050882b857c37634baedbdcf7c2047c24cbff
generic

dma-buf: heaps: Fix off-by-one in CMA heap fault handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/84175dc5b2c932266a50c04e5ce342c30f817a2f
generic

dma-buf: heaps: Fix off-by-one in CMA heap fault handler - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/79cce5e81d20fa9ad553be439d665ac3302d3c95

Vendor Advisories for CVE-2024-46852(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-lowlatency-64k (6.8.0-1019.21.1) @ noble2026-05-21ubuntu
ubuntulinux-tools-gkeop-6.8 (6.8.0-1002.4) @ noble2026-05-21ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.127.126) @ jammy2026-05-21ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1017.18~22.04.1) @ jammy2026-05-21ubuntu
ubuntulinux-tools-azure (6.8.0-1020.23) @ noble2026-05-21ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1039.43) @ jammy2026-05-21ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1073.73) @ jammy2026-05-21ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.127.137~20.04.1) @ focal2026-05-21ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-50.51~22.04.1) @ jammy2026-05-21ubuntu
ubuntulinux-tools-intel-iotg (5.15.0.1071.71) @ jammy2026-05-21ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1078.87~20.04.1) @ focal2026-05-21ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1078.76) @ jammy2026-05-21ubuntu
linuxKernel @ 5.15.168—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(12)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 114 total refreshes for this CVE.

  1. 2026-07-23 02:41 UTCEG score recompute
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-21 15:23 UTCEPSS rescore
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  51. 2026-06-04 11:39 UTCOSV refresh
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  74. 2026-05-21 23:19 UTCEG score recompute
  75. 2026-05-21 23:19 UTCVendor advisory

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-46852?
CVE-2024-46852 is a high vulnerability published on September 27, 2024. 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…
When was CVE-2024-46852 disclosed?
CVE-2024-46852 was first published in the National Vulnerability Database on September 27, 2024, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-46852 actively exploited?
CVE-2024-46852 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-46852?
CVE-2024-46852 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2024-46852?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-46852, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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