CVE-2026-89456
CVE CVE-2026-89456EUVD EUVD-2026-76362Published 2026-09-11T19:43:20.000ZLast changed 2026-09-14T11:59:56.000ZCVSS 7.0
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux 5.6; 5e6bdd37c5526ef01326df5dabb93011ee89237e <15ec03452c18e8d288e519837d21b308300d74b2; 5e6bdd37c5526ef01326df5dabb93011ee89237e <ceafb262475ac6cb3a7d07b1102608be2b216b99; patch: 7.2.4; 5e6bdd37c5526ef01326df5dabb93011ee89237e <6fb5ba2e7e43173a3761e46f091070a8185efa14; 5e6bdd37c5526ef01326df5dabb93011ee89237e <9e063165d3fe58db2a517717b830f17e82d03467; patch: 6.1.188; patch: 7.3-rc1; patch: 5.10.270; 5f7c9989f11305aaa43e0f4378f4f070022a9f2b; 5.4.26 <5.5; patch: 6.18.50; 5.5.10 <5.6; 5e6bdd37c5526ef01326df5dabb93011ee89237e <f735b9710f0c8fe72c1060103e865f4ae678190b; patch: 5.15.221; patch: 6.12.109; 5e6bdd37c5526ef01326df5dabb93011ee89237e <6b0954c8a259da1e4aa745989f82723947acfb46; 5e6bdd37c5526ef01326df5dabb93011ee89237e <d0a2f97d8c97134aa7f6a191940b7bab4bb42f5f; patch: 0; fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04; 5e6bdd37c5526ef01326df5dabb93011ee89237e <d6b8778b1b82aa3a8dbf8612080f635b834bd16b; patch: 6.6.157
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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