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CVE-2025-21832 In the Linux kernel, the following vulnerability has been resolved: block: don't revert iter for -EIOCBQUEUED…
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| Linux 6.14 | premières → < 6.14 | 6.14 |
| Linux 6.13 | premières → < 6.13.3 | 6.13.3 |
| Linux 6.12 | premières → < 6.12.14 | 6.12.14 |
| Linux 6.6 | premières → < 6.6.78 | 6.6.78 |
| Linux 6.1 | premières → < 6.1.129 | 6.1.129 |
| Linux | 5.17 | Pas de correctif indiqué |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions non publiées |
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