Answer in brief
CVE-2022-49076 records a High severity (CVSS 7.8) vulnerability in RDMA/hfi1: Fix use-after-free bug for mm struct. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=3d2a9d642512c21a12d19b9250e7a835dcb41a79 <5f54364ff6cfcd14cddf5441c4a490bb28dd69f7 || >=3d2a9d642512c21a12d19b9250e7a835dcb41a79 <9ca11bd8222a612de0d2f54d050bfcf61ae2883f || >=3d2a9d642512c21a12d19b9250e7a835dcb41a79 <0b7186d657ee55e2cdefae498f07d5c1961e8023 || >=3d2a9d642512c21a12d19b9250e7a835dcb41a79 <5a9a1b24ddb510715f8f621263938186579a965c || >=3d2a9d642512c21a12d19b9250e7a835dcb41a79 <2bbac98d0930e8161b1957dc0ec99de39ade1b3c || 5732f83596f8a573f2cde814cc76a54e1a8995c7 || >=5.9.12 <5.10 | 5f54364ff6cfcd14cddf5441c4a490bb28dd69f7, 9ca11bd8222a612de0d2f54d050bfcf61ae2883f, 0b7186d657ee55e2cdefae498f07d5c1961e8023, 5a9a1b24ddb510715f8f621263938186579a965c, 2bbac98d0930e8161b1957dc0ec99de39ade1b3c, 5.10 |
| Linux/Linuxgeneric | 5.10 | Not reported |
Published upstream
Feb 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: RDMA/hfi1: Fix use-after-free bug for mm struct Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may represent the last reference held on the task mm. hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed before the final use in hfi1_release_user_pages(). A new task may allocate the mm structure while it is still being used, resulting in problems. One manifestation is corruption of the mmap_sem counter leading to a hang in down_write(). Another is corruption of an mm struct that is in use by another task.
Quoted source text, attributed separately from HOL analysis.