cbcvebase.
CVE-2025-21832
published 2025-03-06

CVE-2025-21832: 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…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.19%
8.5th percentile
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.

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.129-1 (bookworm)linux 6.1.129-1 (bookworm)
debianlinux-6.1< linux 6.1.129-1 (bookworm)linux 6.1.129-1 (bookworm)
linuxlinux
linuxlinux>= 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb
linuxlinux>= 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < 84671b0630ccb46ae9f1f99a45c7d63ffcd6a47484671b0630ccb46ae9f1f99a45c7d63ffcd6a474
linuxlinux>= 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < 68f16d3034a06661245ecd22f0d586a8b4e7c47368f16d3034a06661245ecd22f0d586a8b4e7c473
linuxlinux>= 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < a58f136bad29f9ae721a29d98c042fddbee22f77a58f136bad29f9ae721a29d98c042fddbee22f77
linuxlinux>= 3e1f941dd9f33776b3df4e30f741fe445ff773f3 < b13ee668e8280ca5b07f8ce2846b9957a8a10853b13ee668e8280ca5b07f8ce2846b9957a8a10853
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.1.129-16.1.129-1
linuxlinux_kernel>= 0 < 6.12.15-16.12.15-1
linuxlinux_kernel>= 0 < 6.12.15-16.12.15-1
linuxlinux_kernel>= 0 < 6.8.0-64.676.8.0-64.67
linuxlinux_kernel>= 5.17.1 < 6.1.1296.1.129
linuxlinux_kernel>= 6.13 < 6.13.36.13.3
linuxlinux_kernel>= 6.2 < 6.6.786.6.78
linuxlinux_kernel>= 6.7 < 6.12.146.12.14

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv7.8HIGH
vendor_ubuntu7.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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