CVE-2026-89458
CVE CVE-2026-89458EUVD EUVD-2026-76364Published 2026-09-11T19:43:21.000ZLast changed 2026-09-14T11:59:58.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: Do not complete a failed ESE read as successful dasd_int_handler() completes an NRF read of an unallocated ESE track by calling ese_read() and unconditionally marking the request DASD_CQR_SUCCESS. dasd_eckd_ese_read() can return an error before it has zeroed the destination buffer: a failed sense-data parse or a current track outside the requested range both return early, leaving the destination pages untouched. The request is still completed successfully, so the block layer is handed stale / uninitialized memory instead of zeros. Check the ese_read() return value and fail the request through the normal error path instead of forcing DASD_CQR_SUCCESS.
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; 5.5.10 <5.6; 5e6bdd37c5526ef01326df5dabb93011ee89237e <77168af195d04b34c6de62b874624e74d64cef8d; patch: 5.10.270; patch: 6.1.188; 5.4.26 <5.5; patch: 6.6.157; 5e6bdd37c5526ef01326df5dabb93011ee89237e <c9adf8399732306dfc97b3adb4778038743e3f5e; fbbacd0dcbc3ae9398c569dbea96ae4b5ad97e04; patch: 0; patch: 7.3-rc1; 5e6bdd37c5526ef01326df5dabb93011ee89237e <52b331c99baac653ca794bd8487c8ec4de8db203; patch: 7.2.4; 5e6bdd37c5526ef01326df5dabb93011ee89237e <8cb96cffceead3cbd0541154d7ecc5e6474edda1; patch: 6.12.109; patch: 6.18.50; 5e6bdd37c5526ef01326df5dabb93011ee89237e <cddb447c62466f3076938ce120028d7b591f9f37; 5e6bdd37c5526ef01326df5dabb93011ee89237e <55f4df40178cdfede0d7ae848fbab00efa9b95c1; 5f7c9989f11305aaa43e0f4378f4f070022a9f2b; 5e6bdd37c5526ef01326df5dabb93011ee89237e <921ff697bb6f7067059793becf8b2d00de71ce41; patch: 5.15.221; 5e6bdd37c5526ef01326df5dabb93011ee89237e <b0d94dd6e82df396e2254c8b0f25eff7d19c2e7f
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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