Answer in brief
CVE-2025-38427 records a Medium severity (CVSS 5.5) vulnerability in video: screen_info: Relocate framebuffers behind PCI bridges. 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 5.5. 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:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a168da3182f8727b338509cb413147aa29012d6f <cc3cc41ed67054a03134bea42408c720eec0fa04 || >=78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371 <5c70e3ad85d2890d8af375333699429de26327f2 || >=78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371 <aeda386d86d79269a08f470dbdc53d13a91e51fa || >=78aa89d1dfba1e3cf4a2e053afa3b4c4ec622371 <2f29b5c231011b94007d2c8a6d793992f2275db1 || >=6.6.45 <6.6.95 | cc3cc41ed67054a03134bea42408c720eec0fa04, 5c70e3ad85d2890d8af375333699429de26327f2, aeda386d86d79269a08f470dbdc53d13a91e51fa, 2f29b5c231011b94007d2c8a6d793992f2275db1, 6.6.95 |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Jul 25, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: video: screen_info: Relocate framebuffers behind PCI bridges Apply PCI host-bridge window offsets to screen_info framebuffers. Fixes invalid access to I/O memory. Resources behind a PCI host bridge can be relocated by a certain offset in the kernel's CPU address range used for I/O. The framebuffer memory range stored in screen_info refers to the CPU addresses as seen during boot (where the offset is 0). During boot up, firmware may assign a different memory offset to the PCI host bridge and thereby relocating the framebuffer address of the PCI graphics device as seen by the kernel. The information in screen_info must be updated as well. The helper pcibios_bus_to_resource() performs the relocation of the screen_info's framebuffer resource (given in PCI bus addresses). The result matches the I/O-memory resource of the PCI graphics device (given in CPU addresses). As before, we store away the information necessary to later update the information in screen_info itself. Commit 78aa89d1dfba ("firmware/sysfb: Update screen_info for relocated EFI framebuffers") added the code for updating screen_info. It is based on similar functionality that pre-existed in efifb. Efifb uses a pointer to the PCI resource, while the newer code does a memcpy of the region. Hence efifb sees any updates to the PCI resource and avoids the issue. v3: - Only use struct pci_bus_region for PCI bus addresses (Bjorn) - Clarify address semantics in commit messages and comments (Bjorn) v2: - Fixed tags (Takashi, Ivan) - Updated information on efifb
Quoted source text, attributed separately from HOL analysis.