Bug 2555023 (CVE-2026-98648) - CVE-2026-98648 kernel: s390/uv: Prevent potential out-of-bounds read
Summary: CVE-2026-98648 kernel: s390/uv: Prevent potential out-of-bounds read
Keywords:
Status: NEW
Alias: CVE-2026-98648
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-18 15:39 UTC by OSIDB Bzimport
Modified: 2026-10-21 19:43 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


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Description OSIDB Bzimport 2026-10-18 15:39:51 UTC
In the Linux kernel, the following vulnerability has been resolved:

s390/uv: Prevent potential out-of-bounds read

When the system has more than 85 secrets, the uv_secret_list struct
array only holds up to 85 items per page, resulting in an out of bounds
read in find_secret_in_page if the targeted secret is in the next page
or not stored at all.

Fix this by looping over the number of stored secrets which is the
per sub-list count of stored secrets and not the overall count.


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