CVE-2026-89456High· 7.0▾ TwilightIn 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 38.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 5.2
none → medium
— → 5.2
none → medium
— → 7
none → high
7 → 5.2
high → medium
5.2 → 7
medium → high
Last analysed / modified upstream
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.
Linux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < 9e063165d3fe58db2a517717b830f17e82d03467Linux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < 6b0954c8a259da1e4aa745989f82723947acfb46Linux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < d0a2f97d8c97134aa7f6a191940b7bab4bb42f5fLinux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < f735b9710f0c8fe72c1060103e865f4ae678190bLinux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < d6b8778b1b82aa3a8dbf8612080f635b834bd16bLinux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < ceafb262475ac6cb3a7d07b1102608be2b216b99Linux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < 15ec03452c18e8d288e519837d21b308300d74b2Linux >= 5e6bdd37c5526ef01326df5dabb93011ee89237e < 6fb5ba2e7e43173a3761e46f091070a8185efa14Linux fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04Linux 5f7c9989f11305aaa43e0f4378f4f070022a9f2bLinux >= 5.4.26 < 5.5Linux >= 5.5.10 < 5.6Linux 5.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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