Answer in brief
CVE-2024-46852 records a High severity (CVSS 7.8) vulnerability in dma-buf: heaps: Fix off-by-one in CMA heap fault handler. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 5.11 | Not reported |
| Linux/Linuxgeneric | >=a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 <79cce5e81d20fa9ad553be439d665ac3302d3c95 || >=a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 <84175dc5b2c932266a50c04e5ce342c30f817a2f || >=a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 <eb7fc8b65cea22f9038c52398c8b22849e9620ea || >=a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 <e79050882b857c37634baedbdcf7c2047c24cbff || >=a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 <ea5ff5d351b520524019f7ff7f9ce418de2dad87 | 79cce5e81d20fa9ad553be439d665ac3302d3c95, 84175dc5b2c932266a50c04e5ce342c30f817a2f, eb7fc8b65cea22f9038c52398c8b22849e9620ea, e79050882b857c37634baedbdcf7c2047c24cbff, ea5ff5d351b520524019f7ff7f9ce418de2dad87 |
Published upstream
Sep 27, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.