Description
In the Linux kernel, the following vulnerability has been resolved:
s390/dasd: Propagate partial completion length across ERP recovery
dasd_default_erp_postaction() copies the timing and device state from the finished ERP request back to the original request but drops proc_bytes. A request that was partially completed, an ESE read of a not-yet-allocated track returns fewer bytes than requested, and then recovered through the ERP chain loses its partial-completion length. __dasd_cleanup_cqr() then sees proc_bytes == 0 and completes the whole request instead of requeueing the remainder, silently returning zeroed data for the part that was never read.
Carry proc_bytes over to the original request like the other per-request state.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < 9e063165d3fe58db2a517717b830f17e82d03467; >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < 6b0954c8a259da1e4aa745989f82723947acfb46; >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < d0a2f97d8c97134aa7f6a191940b7bab4bb42f5f; >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < f735b9710f0c8fe72c1060103e865f4ae678190b; >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < d6b8778b1b82aa3a8dbf8612080f635b834bd16b; >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < ceafb262475ac6cb3a7d07b1102608be2b216b99; >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < 15ec03452c18e8d288e519837d21b308300d74b2; >= 5e6bdd37c5526ef01326df5dabb93011ee89237e, < 6fb5ba2e7e43173a3761e46f091070a8185efa14; fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04; 5f7c9989f11305aaa43e0f4378f4f070022a9f2b; >= 5.4.26, < 5.5; >= 5.5.10, < 5.6 |
| Linux | Linux | 5.6 |
References
- https://git.kernel.org/stable/c/15ec03452c18e8d288e519837d21b308300d74b2
- https://git.kernel.org/stable/c/6b0954c8a259da1e4aa745989f82723947acfb46
- https://git.kernel.org/stable/c/6fb5ba2e7e43173a3761e46f091070a8185efa14
- https://git.kernel.org/stable/c/9e063165d3fe58db2a517717b830f17e82d03467
- https://git.kernel.org/stable/c/ceafb262475ac6cb3a7d07b1102608be2b216b99
- https://git.kernel.org/stable/c/d0a2f97d8c97134aa7f6a191940b7bab4bb42f5f
- https://git.kernel.org/stable/c/d6b8778b1b82aa3a8dbf8612080f635b834bd16b
- https://git.kernel.org/stable/c/f735b9710f0c8fe72c1060103e865f4ae678190b
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received