{"id":"CVE-2025-37929","summary":"arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays","details":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays\n\nCommit a5951389e58d (\"arm64: errata: Add newer ARM cores to the\nspectre_bhb_loop_affected() lists\") added some additional CPUs to the\nSpectre-BHB workaround, including some new arrays for designs that\nrequire new 'k' values for the workaround to be effective.\n\nUnfortunately, the new arrays omitted the sentinel entry and so\nis_midr_in_range_list() will walk off the end when it doesn't find a\nmatch. With UBSAN enabled, this leads to a crash during boot when\nis_midr_in_range_list() is inlined (which was more common prior to\nc8c2647e69be (\"arm64: Make  _midr_in_range_list() an exported\nfunction\")):\n\n |  Internal error: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP\n |  pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n |  pc : spectre_bhb_loop_affected+0x28/0x30\n |  lr : is_spectre_bhb_affected+0x170/0x190\n | [...]\n |  Call trace:\n |   spectre_bhb_loop_affected+0x28/0x30\n |   update_cpu_capabilities+0xc0/0x184\n |   init_cpu_features+0x188/0x1a4\n |   cpuinfo_store_boot_cpu+0x4c/0x60\n |   smp_prepare_boot_cpu+0x38/0x54\n |   start_kernel+0x8c/0x478\n |   __primary_switched+0xc8/0xd4\n |  Code: 6b09011f 54000061 52801080 d65f03c0 (d4200020)\n |  ---[ end trace 0000000000000000 ]---\n |  Kernel panic - not syncing: aarch64 BRK: Fatal exception\n\nAdd the missing sentinel entries.","modified":"2026-04-16T04:32:38.407385999Z","published":"2025-05-20T15:21:55.253Z","related":["SUSE-SU-2025:01964-1","SUSE-SU-2025:01965-1","SUSE-SU-2025:02000-1","SUSE-SU-2025:02254-1","SUSE-SU-2025:02307-1","SUSE-SU-2025:02333-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:20408-1","SUSE-SU-2025:20413-1","SUSE-SU-2025:20419-1","SUSE-SU-2025:20421-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37929.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/090c8714efe1c3c470301cc2f794c1ee2a57746c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/333579202f09e260e8116321df4c55f80a19b160"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/446289b8b36b2ee98dabf6388acbddcc33ed41be"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e68da90ac00d8b681561aeb8f5d6c47af3a04861"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37929.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-37929"},{"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":"4a2f3d8260a996bc43dcc1ce49ac594db54f4b3e"},{"fixed":"e68da90ac00d8b681561aeb8f5d6c47af3a04861"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"46e22de65eb45a67a68ddfe9301f79b0c3821ca8"},{"fixed":"6266b3509b2c6ebf2f9daf2239ff8eb60c5f5bd3"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a53b3599d9bf9375f9033f2aa1fa92714fb1d0f0"},{"fixed":"446289b8b36b2ee98dabf6388acbddcc33ed41be"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4117975672c4743cffaf32b6fd018cfacd1b420e"},{"fixed":"3821cae9bd5a99a42d3d0be1b58e41f072cd4c4c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9ca4fe357464bbdad0db67985275f2694df8dab5"},{"fixed":"090c8714efe1c3c470301cc2f794c1ee2a57746c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e060dbb7393ed7bdfba6b5ea7566f9ef87381cfb"},{"fixed":"333579202f09e260e8116321df4c55f80a19b160"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a5951389e58d2e816eed3dbec5877de9327fd881"},{"fixed":"fee4d171451c1ad9e8aaf65fc0ab7d143a33bd72"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"ed681e90fb244aa883b918c4d8be2614e816c6df"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-37929.json"}}],"schema_version":"1.7.5"}