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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 3e1f941dd9f33776b3df4e30f741fe445ff773f3, < 6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb; >= 3e1f941dd9f33776b3df4e30f741fe445ff773f3, < 84671b0630ccb46ae9f1f99a45c7d63ffcd6a474; >= 3e1f941dd9f33776b3df4e30f741fe445ff773f3, < 68f16d3034a06661245ecd22f0d586a8b4e7c473; >= 3e1f941dd9f33776b3df4e30f741fe445ff773f3, < a58f136bad29f9ae721a29d98c042fddbee22f77; >= 3e1f941dd9f33776b3df4e30f741fe445ff773f3, < b13ee668e8280ca5b07f8ce2846b9957a8a10853 |
| Linux | Linux | 5.17 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < * |
References
- https://git.kernel.org/stable/c/68f16d3034a06661245ecd22f0d586a8b4e7c473Patch
- https://git.kernel.org/stable/c/6c26619effb1b4cb7d20b4e666ab8f71f6a53ccbPatch
- https://git.kernel.org/stable/c/84671b0630ccb46ae9f1f99a45c7d63ffcd6a474Patch
- https://git.kernel.org/stable/c/a58f136bad29f9ae721a29d98c042fddbee22f77Patch
- https://git.kernel.org/stable/c/b13ee668e8280ca5b07f8ce2846b9957a8a10853Patch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Timeline
- Published
- Mar 6, 2025
- Last modified
- Oct 15, 2026
- NVD status
- Modified