Answer in brief
CVE-2025-21832 records a Unknown severity vulnerability in block: don't revert iter for -EIOCBQUEUED. 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 | >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <84671b0630ccb46ae9f1f99a45c7d63ffcd6a474 || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <68f16d3034a06661245ecd22f0d586a8b4e7c473 || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <a58f136bad29f9ae721a29d98c042fddbee22f77 || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <b13ee668e8280ca5b07f8ce2846b9957a8a10853 | 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb, 84671b0630ccb46ae9f1f99a45c7d63ffcd6a474, 68f16d3034a06661245ecd22f0d586a8b4e7c473, a58f136bad29f9ae721a29d98c042fddbee22f77, b13ee668e8280ca5b07f8ce2846b9957a8a10853 |
| Linux/Linuxgeneric | 5.17 | Not reported |
Published upstream
Mar 6, 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: block: don't revert iter for -EIOCBQUEUED blkdev_read_iter() has a few odd checks, like gating the position and count adjustment on whether or not the result is bigger-than-or-equal to zero (where bigger than makes more sense), and not checking the return value of blkdev_direct_IO() before doing an iov_iter_revert(). The latter can lead to attempting to revert with a negative value, which when passed to iov_iter_revert() as an unsigned value will lead to throwing a WARN_ON() because unroll is bigger than MAX_RW_COUNT. Be sane and don't revert for -EIOCBQUEUED, like what is done in other spots.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-21832 records a Unknown severity vulnerability in block: don't revert iter for -EIOCBQUEUED. 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 | >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <84671b0630ccb46ae9f1f99a45c7d63ffcd6a474 || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <68f16d3034a06661245ecd22f0d586a8b4e7c473 || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <a58f136bad29f9ae721a29d98c042fddbee22f77 || >=3e1f941dd9f33776b3df4e30f741fe445ff773f3 <b13ee668e8280ca5b07f8ce2846b9957a8a10853 | 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb, 84671b0630ccb46ae9f1f99a45c7d63ffcd6a474, 68f16d3034a06661245ecd22f0d586a8b4e7c473, a58f136bad29f9ae721a29d98c042fddbee22f77, b13ee668e8280ca5b07f8ce2846b9957a8a10853 |
| Linux/Linuxgeneric | 5.17 | Not reported |
Published upstream
Mar 6, 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: block: don't revert iter for -EIOCBQUEUED blkdev_read_iter() has a few odd checks, like gating the position and count adjustment on whether or not the result is bigger-than-or-equal to zero (where bigger than makes more sense), and not checking the return value of blkdev_direct_IO() before doing an iov_iter_revert(). The latter can lead to attempting to revert with a negative value, which when passed to iov_iter_revert() as an unsigned value will lead to throwing a WARN_ON() because unroll is bigger than MAX_RW_COUNT. Be sane and don't revert for -EIOCBQUEUED, like what is done in other spots.
Quoted source text, attributed separately from HOL analysis.