Answer in brief
CVE-2022-49377 records a Unknown severity vulnerability in blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx. 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 | >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff || >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <b140bac470b4f707cda59c7266214246238661df || >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <70fdd922c7bf8949f8df109cf2635dff64c90392 || >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <5d05426e2d5fd7df8afc866b78c36b37b00188b7 | 460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff, b140bac470b4f707cda59c7266214246238661df, 70fdd922c7bf8949f8df109cf2635dff64c90392, 5d05426e2d5fd7df8afc866b78c36b37b00188b7 |
| Linux/Linuxgeneric | 5.12 | 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: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns. So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2022-49377 records a Unknown severity vulnerability in blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx. 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 | >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff || >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <b140bac470b4f707cda59c7266214246238661df || >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <70fdd922c7bf8949f8df109cf2635dff64c90392 || >=b6e68ee82585f2ee890b0a897a6aacbf49a467bb <5d05426e2d5fd7df8afc866b78c36b37b00188b7 | 460aa288c5cd0544dcf933a2f0ad0e8c6d2d35ff, b140bac470b4f707cda59c7266214246238661df, 70fdd922c7bf8949f8df109cf2635dff64c90392, 5d05426e2d5fd7df8afc866b78c36b37b00188b7 |
| Linux/Linuxgeneric | 5.12 | 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: blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns. So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.
Quoted source text, attributed separately from HOL analysis.