CVE-2025-21832
- 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
- 2026-05-13T03:52:27.032033140Z
- 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
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21832.json" }- References
-
- https://git.kernel.org/stable/c/68f16d3034a06661245ecd22f0d586a8b4e7c473
- https://git.kernel.org/stable/c/6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb
- https://git.kernel.org/stable/c/84671b0630ccb46ae9f1f99a45c7d63ffcd6a474
- https://git.kernel.org/stable/c/a58f136bad29f9ae721a29d98c042fddbee22f77
- https://git.kernel.org/stable/c/b13ee668e8280ca5b07f8ce2846b9957a8a10853
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21832.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21832
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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
-
Introduced3e1f941dd9f33776b3df4e30f741fe445ff773f3Fixed6c26619effb1b4cb7d20b4e666ab8f71f6a53ccbFixed84671b0630ccb46ae9f1f99a45c7d63ffcd6a474Fixed68f16d3034a06661245ecd22f0d586a8b4e7c473Fixeda58f136bad29f9ae721a29d98c042fddbee22f77Fixedb13ee668e8280ca5b07f8ce2846b9957a8a10853