CVE-2026-98648
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.
Affected versions
Linux kernel versions
6.13
and later are affected. Fixed in
6.18.55,
7.2.9,
7.3
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-98648?
CVE-2026-98648 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.13 onward and has been patched in 6.18.55, 7.2.9 and 7.3. CVE-2026-98648 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98648?
Yes. CVE-2026-98648 has been patched. Fixed versions include 6.18.55, 7.2.9 and 7.3. If you are running Linux kernel 6.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98648 actively exploited?
No. CVE-2026-98648 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.