{"id":"CVE-2025-39763","summary":"ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered\n\nIf a synchronous error is detected as a result of user-space process\ntriggering a 2-bit uncorrected error, the CPU will take a synchronous\nerror exception such as Synchronous External Abort (SEA) on Arm64. The\nkernel will queue a memory_failure() work which poisons the related\npage, unmaps the page, and then sends a SIGBUS to the process, so that\na system wide panic can be avoided.\n\nHowever, no memory_failure() work will be queued when abnormal\nsynchronous errors occur. These errors can include situations like\ninvalid PA, unexpected severity, no memory failure config support,\ninvalid GUID section, etc. In such a case, the user-space process will\ntrigger SEA again.  This loop can potentially exceed the platform\nfirmware threshold or even trigger a kernel hard lockup, leading to a\nsystem reboot.\n\nFix it by performing a force kill if no memory_failure() work is queued\nfor synchronous errors.\n\n[ rjw: Changelog edits ]","modified":"2026-10-08T02:50:04.496444218Z","published":"2025-09-11T16:52:31.350Z","related":["SUSE-SU-2025:03600-1","SUSE-SU-2025:03614-1","SUSE-SU-2025:03634-1","SUSE-SU-2025:20851-1","SUSE-SU-2025:20861-1","SUSE-SU-2025:20870-1","SUSE-SU-2025:20898-1","SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","SUSE-SU-2025:3751-1","SUSE-SU-2025:4057-1","SUSE-SU-2025:4132-1","SUSE-SU-2025:4141-1","SUSE-SU-2026:20560-1","openSUSE-SU-2025:20081-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39763.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/082735fbcdb6cd0cf20fbec94516ab2996f1cdd5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2fbc85da9ac9386bd89fcc94e0aadaea19d47784"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3cb4f18797247985b0f51d5300f8cb6c78f343ea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/79a5ae3c4c5eb7e38e0ebe4d6bf602d296080060"},{"type":"WEB","url":"https://git.kernel.org/stable/c/af089e41811a1ad6a7b2b80e839a73ec4c3cecdd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cfc9bc15bda6fd0c496cbe2c628564d4d7c332c1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39763.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39763"},{"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":"8fcc4ae6faf8b455eeef00bc9ae70744e3b0f462"},{"fixed":"2fbc85da9ac9386bd89fcc94e0aadaea19d47784"},{"fixed":"082735fbcdb6cd0cf20fbec94516ab2996f1cdd5"},{"fixed":"cfc9bc15bda6fd0c496cbe2c628564d4d7c332c1"},{"fixed":"af089e41811a1ad6a7b2b80e839a73ec4c3cecdd"},{"fixed":"3cb4f18797247985b0f51d5300f8cb6c78f343ea"},{"fixed":"79a5ae3c4c5eb7e38e0ebe4d6bf602d296080060"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.4.69"},{"fixed":"5.5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"af02933d59bd1621a48d8b0b331cca9e530ba14b"}]}],"versions":["v5.4.302","v5.4.301","v5.4.300","v5.4.299","v5.4.298","v5.4.297","v5.4.296","v5.4.295","v5.4.294","v5.4.293","v5.4.292","v5.4.291","v5.4.290","v5.4.289","v5.4.288","v5.4.287","v5.4.286","v5.4.285","v5.4.284","v5.4.283","v5.4.282","v5.4.281","v5.4.280","v5.4.279","v5.4.278","v5.4.277","v5.4.276","v5.4.275","v5.4.274","v5.4.273","v5.4.272","v5.4.271","v5.4.270","v5.4.269","v5.4.268","v5.4.267","v5.4.266","v5.4.265","v5.4.264","v5.4.263","v5.4.262","v5.4.261","v5.4.260","v5.4.259","v5.4.258","v5.4.257","v5.4.256","v5.4.255","v5.4.254","v5.4.253","v5.4.252","v5.4.251","v5.4.250","v5.4.249","v5.4.248","v5.4.247","v5.4.246","v5.4.245","v5.4.244","v5.4.243","v5.4.242","v5.4.241","v5.4.240","v5.4.239","v5.4.238","v5.4.237","v5.4.236","v5.4.235","v5.4.234","v5.4.233","v5.4.232","v5.4.231","v5.4.230","v5.4.229","v5.4.228","v5.4.227","v5.4.226","v5.4.225","v5.4.224","v5.4.223","v5.4.222","v5.4.221","v5.4.220","v5.4.219","v5.4.218","v5.4.217","v5.4.216","v5.4.215","v5.4.214","v5.4.213","v5.4.212","v5.4.211","v5.4.210","v5.4.209","v5.4.208","v5.4.207","v5.4.206","v5.4.205","v5.4.204","v5.4.203","v5.4.202","v5.4.201","v5.4.200","v5.4.199","v5.4.198","v5.4.197","v5.4.196","v5.4.195","v5.4.194","v5.4.193","v5.4.192","v5.4.191","v5.4.190","v5.4.189","v5.4.188","v5.4.187","v5.4.186","v5.4.185","v5.4.184","v5.4.183","v5.4.182","v5.4.181","v5.4.180","v5.4.179","v5.4.178","v5.4.177","v5.4.176","v5.4.175","v5.4.174","v5.4.173","v5.4.172","v5.4.171","v5.4.170","v5.4.169","v5.4.168","v5.4.167","v5.4.166","v5.4.165","v5.4.164","v5.4.163","v5.4.162","v5.4.161","v5.4.160","v5.4.159","v5.4.158","v5.4.157","v5.4.156","v5.4.155","v5.4.154","v5.4.153","v5.4.152","v5.4.151","v5.4.150","v5.4.149","v5.4.148","v5.4.147","v5.4.146","v5.4.145","v5.4.144","v5.4.143","v5.4.142","v5.4.141","v5.4.140","v5.4.139","v5.4.138","v5.4.137","v5.4.136","v5.4.135","v5.4.134","v5.4.133","v5.4.132","v5.4.131","v5.4.130","v5.4.129","v5.4.128","v5.4.127","v5.4.126","v5.4.125","v5.4.124","v5.4.123","v5.4.122","v5.4.121","v5.4.120","v5.4.119","v5.4.118","v5.4.117","v5.4.116","v5.4.115","v5.4.114","v5.4.113","v5.4.112","v5.4.111","v5.4.110","v5.4.109","v5.4.108","v5.4.107","v5.4.106","v5.4.105","v5.4.104","v5.4.103","v5.4.102","v5.4.101","v5.4.100","v5.4.99","v5.4.98","v5.4.97","v5.4.96","v5.4.95","v5.4.94","v5.4.93","v5.4.92","v5.4.91","v5.4.90","v5.4.89","v5.4.88","v5.4.87","v5.4.86","v5.4.85","v5.4.84","v5.4.83","v5.4.82","v5.4.81","v5.4.80","v5.4.79","v5.4.78","v5.4.77","v5.4.76","v5.4.75","v5.4.74","v5.4.73","v5.4.72","v5.4.71","v5.4.70","v5.4.69"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39763.json"}},{"package":{"name":"Kernel","ecosystem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