{"affected":[],"cveId":"CVE-2026-64558","cwes":["CWE-122"],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/pkey: Check length in pkey_pckmo handler implementation\n\nExplicitly check the length of the target buffer in the pkey_pckmo\nimplementation of the key_to_protkey() handler function. The handler\nfunction fails, if the generated output data exceeds the length of the\nprovided target buffer.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.8,"severity":"high","source":"NVD: 416baaa9-dc9f-4396-8d5f-8c081fb06d67","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793729739353,"publishedAt":1785345413410,"references":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/02028a24e26d85262ab9c8fc4344e1f3503007fc"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/1ac287e2af9a9112fe271427ef45eceb26bce8b4"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/433e5e70cdc1edf382d28d08a885b22e2b98b7da"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/614aa0491c7a190556c2345dddee0b6f5ed90989"}],"remediation":[],"revision":"4d2ee13858fbae25b453d0b0f427bb2d6cdafcf464450a609b9bc2c5d51fdd5f","sources":[{"modifiedAt":1793729739353,"name":"NVD","retrievedAt":1793729785891,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64558"}],"ssvc":{"assessedAt":1792165360566,"automatable":"no","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"total"},"status":"published","title":"CVE-2026-64558","updatedAt":1793729785891}