CVE-2024-46852
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2024
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
dma-buf: heaps: Fix off-by-one in CMA heap fault handler
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 | affected | git | 79cce5e81d20fa9ad553be439d665ac3302d3c95 | Unavailable | None listed |
| a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 | affected | git | 84175dc5b2c932266a50c04e5ce342c30f817a2f | Unavailable | None listed |
| a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 | affected | git | eb7fc8b65cea22f9038c52398c8b22849e9620ea | Unavailable | None listed |
| a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 | affected | git | e79050882b857c37634baedbdcf7c2047c24cbff | Unavailable | None listed |
| a5d2d29e24be8967ef78a1b1fb2292413e3b3df9 | affected | git | ea5ff5d351b520524019f7ff7f9ce418de2dad87 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.11 | Unavailable | None listed |
| 5.15.168 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.111 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.52 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.10.11 | unaffected | semver | Unavailable | 6.10.* | None listed |
| 6.11 | unaffected | original_commit_for_fix | Unavailable | * | None listed |