{"id":"CVE-2025-37996","summary":"KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()\n\nCommit fce886a60207 (\"KVM: arm64: Plumb the pKVM MMU in KVM\") made the\ninitialization of the local memcache variable in user_mem_abort()\nconditional, leaving a codepath where it is used uninitialized via\nkvm_pgtable_stage2_map().\n\nThis can fail on any path that requires a stage-2 allocation\nwithout transition via a permission fault or dirty logging.\n\nFix this by making sure that memcache is always valid.","modified":"2026-04-02T12:47:43.012476Z","published":"2025-05-29T13:15:54.956Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37996.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a26d50f8a4a5049e956984797b5d0dedea4bbb18"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37996.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-37996"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"fce886a6020734d6253c2c5a3bc285e385cc5496"},{"fixed":"a26d50f8a4a5049e956984797b5d0dedea4bbb18"},{"fixed":"157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37996.json"}}],"schema_version":"1.7.5"}