CVE-2025-21832

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Source
https://cve.org/CVERecord?id=CVE-2025-21832
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21832.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-21832
Downstream
Related
Published
2025-03-06T16:22:34.125Z
Modified
2026-03-20T12:41:11.861861Z
Summary
block: don't revert iter for -EIOCBQUEUED
Details

In the Linux kernel, the following vulnerability has been resolved:

block: don't revert iter for -EIOCBQUEUED

blkdevreaditer() 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 blkdevdirectIO() before doing an ioviterrevert(). The latter can lead to attempting to revert with a negative value, which when passed to ioviterrevert() as an unsigned value will lead to throwing a WARNON() because unroll is bigger than MAXRW_COUNT.

Be sane and don't revert for -EIOCBQUEUED, like what is done in other spots.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21832.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3e1f941dd9f33776b3df4e30f741fe445ff773f3
Fixed
6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb
Fixed
84671b0630ccb46ae9f1f99a45c7d63ffcd6a474
Fixed
68f16d3034a06661245ecd22f0d586a8b4e7c473
Fixed
a58f136bad29f9ae721a29d98c042fddbee22f77
Fixed
b13ee668e8280ca5b07f8ce2846b9957a8a10853

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21832.json"