CVE-2026-64280
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()
In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() afu_ioctl_dma_map() accepts a 64-bit length from userspace via DFL_FPGA_PORT_DMA_MAP ioctl without an upper bound check. The value is passed to afu_dma_pin_pages() where npages is derived as length >> PAGE_SHIFT and passed to pin_user_pages_fast() which takes int nr_pages, causing implicit truncation if length is very large. Validate map.length at the ioctl entry point before calling afu_dma_map_region(), rejecting values whose page count exceeds INT_MAX.
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) |
|---|---|---|---|---|---|
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | 5352d488ce4ae5e8c68c080ad4c3a5f084ad5fbc | Unavailable | None listed |
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | d7e787eee2ea619b6dbb98890472ee73daf2e7fd | Unavailable | None listed |
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | a6a3884ff500f04f3088d6d09eec803cd35331a2 | Unavailable | None listed |
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | 16381bda90b261a656ded0568630c1b857b2ebc8 | Unavailable | None listed |
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | b50e6cd2395cde615f59b624819998d28c0668d6 | Unavailable | None listed |
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | 59070040fd12e0b78d7b4d341d9f9a183237c5ff | Unavailable | None listed |
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | fb2c0eab51ae5b02d2bae7d67c2cfbec39b57231 | Unavailable | None listed |
| fa8dda1edef9ebc3af467c644c5533ac97171e12 | affected | git | fc3b071a7c8dc0f5d56defddf6e6fd5aaa3e1e27 | 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) |
|---|---|---|---|---|---|
| 4.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.19 | Unavailable | None listed |
| 5.10.266 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.217 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.184 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.148 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.101 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.39 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.4 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |