CVE-2026-98648None▾ Sunlit

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

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 i…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Oct 18, 2026

Updated

Oct 19, 2026

CVSS

—

Vendor

Linux

Product

Linux

CWE

—

Depth score

3 · Minimal

EPSS

0.17% · p6

Platforms

—

Source

CVEORG

Vector

—

EPSS history

Exploit-prediction probability, daily snapshots since Oct 20.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 2 days

Oct 18, 2026Published
Disclosed via CVEORG
Oct 19, 2026Record revised
Last analysed / modified upstream
Oct 20, 2026EPSS first tracked
0.2%

Linux #cve.org

Affected

Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 116bba758533a139bbede8d717a1371bd6d890f6
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < f47190b08b71e8482072978373ee88cb2dfbdaf4
Linux 6.13

Full technical detail▾

Overview

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

Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 116bba758533a139bbede8d717a1371bd6d890f6
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < f47190b08b71e8482072978373ee88cb2dfbdaf4
Linux 6.13

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#cve.org

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CVE-2026-98648None▾ Sunlit

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

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score3/ 100 · Minimal

impact 2.8 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Oct 18, 2026

Updated

Oct 19, 2026

CVSS

—

Vendor

Linux

Product

Linux

CWE

—

Depth score

3 · Minimal

EPSS

0.17% · p6

Platforms

—

Source

CVEORG

Vector

—

EPSS history

Exploit-prediction probability, daily snapshots since Oct 20.

0.2% → 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 2 days

Oct 18, 2026Published
Disclosed via CVEORG
Oct 19, 2026Record revised
Last analysed / modified upstream
Oct 20, 2026EPSS first tracked
0.2%

Linux #cve.org

Affected

Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 116bba758533a139bbede8d717a1371bd6d890f6
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < f47190b08b71e8482072978373ee88cb2dfbdaf4
Linux 6.13

Full technical detail▾

Overview

In the Linux kernel, the following vulnerability has been resolved:

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

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

Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 04bb5b2eb9f1d56110f14d3a4e31fa2c65fb026f
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < 116bba758533a139bbede8d717a1371bd6d890f6
Linux >= 7c9137af2042e0d67aae0ccd84afc8ffc4b0d95d < f47190b08b71e8482072978373ee88cb2dfbdaf4
Linux 6.13

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#cve.org