Answer in brief
CVE-2022-49076 records a Unknown severity 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.
A CVSS score is not reported in the current record. 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.
Answer in brief
CVE-2022-49076 records a Unknown severity 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.
A CVSS score is not reported in the current record. 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.