{"id":"CVE-2026-98651","title":"KVM: s390: Properly handle NULL pointer in dat_cond_set_storage_key()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Properly handle NULL pointer in dat_cond_set_storage_key()\n\nSome callers pass NULL as oldkey. Calling page_cond_set_storage_key()\nwill cause that NULL pointe…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 8e03e8316eb242af307d1c789d09f1a1457cf9a3 < 75867536746ab2d034488a6a93ee6cde83553342","Linux >= 8e03e8316eb242af307d1c789d09f1a1457cf9a3 < 88e22ffd1e46b95e40a6afabe486deb1d31a3ae1","Linux 7.0"],"published":"2026-10-18","updated":"2026-10-19","sourceUpdated":"2026-10-19T09:23:20.711Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98651","references":[{"url":"https://git.kernel.org/stable/c/75867536746ab2d034488a6a93ee6cde83553342"},{"url":"https://git.kernel.org/stable/c/88e22ffd1e46b95e40a6afabe486deb1d31a3ae1"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T15:45:12.227Z","slug":"CVE-2026-98651","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Properly handle NULL pointer in dat_cond_set_storage_key()\n\nSome callers pass NULL as oldkey. Calling page_cond_set_storage_key()\nwill cause that NULL pointer to get dereferenced.\n\nFix by checking for NULL and assigning the pointer to a dummy local\nvariable to avoid crashes.\n\n## Affected\n\n- `Linux >= 8e03e8316eb242af307d1c789d09f1a1457cf9a3 < 75867536746ab2d034488a6a93ee6cde83553342`\n- `Linux >= 8e03e8316eb242af307d1c789d09f1a1457cf9a3 < 88e22ffd1e46b95e40a6afabe486deb1d31a3ae1`\n- `Linux 7.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}