Answer in brief
CVE-2026-46054 records a High severity (CVSS 7.1) vulnerability in selinux: fix overlayfs mmap() and mprotect() access checks. The current sources do not mark it as known exploited. The current feed maps Red Hat/kernel-rt (generic), 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 7.1. 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 Red Hat/kernel-rt (generic), 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 |
|---|---|---|
| Red Hat/kernel-rtgeneric | * | Not reported |
| Linux/Linuxgeneric | >=2f502839e85ab265f03f25f30d6463154aee5473 <bc6c380c1159de52a252ed11f19a42c47f60a735 || >=2f502839e85ab265f03f25f30d6463154aee5473 <8bacd09f12c27710228562e4d13163e58c5f4a45 || >=2f502839e85ab265f03f25f30d6463154aee5473 <d844702198395d3f80222777030f69db6be6b709 || >=2f502839e85ab265f03f25f30d6463154aee5473 <cd0e707a927a70cdfd8bc5a512a9719a87f5ed51 || >=2f502839e85ab265f03f25f30d6463154aee5473 <82544d36b1729153c8aeb179e84750f0c085d3b1 | bc6c380c1159de52a252ed11f19a42c47f60a735, 8bacd09f12c27710228562e4d13163e58c5f4a45, d844702198395d3f80222777030f69db6be6b709, cd0e707a927a70cdfd8bc5a512a9719a87f5ed51, 82544d36b1729153c8aeb179e84750f0c085d3b1 |
| Linux/Linuxgeneric | 4.19 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
In the Linux kernel, the following vulnerability has been resolved: selinux: fix overlayfs mmap() and mprotect() access checks The existing SELinux security model for overlayfs is to allow access if the current task is able to access the top level file (the "user" file) and the mounter's credentials are sufficient to access the lower level file (the "backing" file). Unfortunately, the current code does not properly enforce these access controls for both mmap() and mprotect() operations on overlayfs filesystems. This patch makes use of the newly created security_mmap_backing_file() LSM hook to provide the missing backing file enforcement for mmap() operations, and leverages the backing file API and new LSM blob to provide the necessary information to properly enforce the mprotect() access controls.
Quoted source text, attributed separately from HOL analysis.