block: don't revert iter for -EIOCBQUEUED (Linux Linux)

CVE-2025-21832
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.19 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

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.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb ; affected 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < 84671b0630ccb46ae9f1f99a45c7d63ffcd6a474 ; affected 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < 68f16d3034a06661245ecd22f0d586a8b4e7c473 ; affected 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < a58f136bad29f9ae721a29d98c042fddbee22f77 ; affected 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < b13ee668e8280ca5b07f8ce2846b9957a8a10853
Linux · Linuxaffected 5.17 ; unaffected 0 < 5.17 ; unaffected 6.1.129 ≤ 6.1.* ; unaffected 6.6.78 ≤ 6.6.* ; unaffected 6.12.14 ≤ 6.12.* ; unaffected 6.13.3 ≤ 6.13.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD