CVE-2026-64558High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: s390/pkey: Check length in pkey_pckmo handler implementation Explicitly check the length of the target buffer in the pkey_pckmo implementation of the key_to_protkey() …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
s390/pkey: Check length in pkey_pckmo handler implementation
Explicitly check the length of the target buffer in the pkey_pckmo implementation of the key_to_protkey() handler function. The handler function fails, if the generated output data exceeds the length of the provided target buffer.
Linux >= 8fcc231ce3bea12b78bb94b280cdc03cff342435 < 02028a24e26d85262ab9c8fc4344e1f3503007fcLinux >= 8fcc231ce3bea12b78bb94b280cdc03cff342435 < 433e5e70cdc1edf382d28d08a885b22e2b98b7daLinux >= 8fcc231ce3bea12b78bb94b280cdc03cff342435 < 614aa0491c7a190556c2345dddee0b6f5ed90989Linux >= 8fcc231ce3bea12b78bb94b280cdc03cff342435 < 1ac287e2af9a9112fe271427ef45eceb26bce8b4Linux 6.12Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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