{"id":"CVE-2025-37846","title":"arm64: mops: Do not dereference src reg for a set operation","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: mops: Do not dereference src reg for a set operation\n\nThe source register is not used for SET* and reading it can result in\na UBSAN out-of-bounds array access er…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < eec737e17e5567e08148550a7f1d94d495b9fb17","Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < 43267d934eacff6c70e15545d804ebbcab8a0bf5","Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < 5f6022a74147675124b781fdc056b291850e7786","Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < a13bfa4fe0d6949cea14718df2d1fe84c38cd113","Linux 6.7"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:42:20.551748Z"},"published":"2025-05-09","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:52:05.305Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-37846","references":[{"url":"https://git.kernel.org/stable/c/eec737e17e5567e08148550a7f1d94d495b9fb17"},{"url":"https://git.kernel.org/stable/c/43267d934eacff6c70e15545d804ebbcab8a0bf5"},{"url":"https://git.kernel.org/stable/c/5f6022a74147675124b781fdc056b291850e7786"},{"url":"https://git.kernel.org/stable/c/a13bfa4fe0d6949cea14718df2d1fe84c38cd113"}],"tags":["cve.org"],"epss":0.00288,"epssPercentile":0.21504,"ingestedAt":"2026-11-05T22:38:31.900Z","slug":"CVE-2025-37846","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\narm64: mops: Do not dereference src reg for a set operation\n\nThe source register is not used for SET* and reading it can result in\na UBSAN out-of-bounds array access error, specifically when the MOPS\nexception is taken from a SET* sequence with XZR (reg 31) as the\nsource. Architecturally this is the only case where a src/dst/size\nfield in the ESR can be reported as 31.\n\nPrior to 2de451a329cf662b the code in do_el0_mops() was benign as the\nuse of pt_regs_read_reg() prevented the out-of-bounds access.\n\n## Affected\n\n- `Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < eec737e17e5567e08148550a7f1d94d495b9fb17`\n- `Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < 43267d934eacff6c70e15545d804ebbcab8a0bf5`\n- `Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < 5f6022a74147675124b781fdc056b291850e7786`\n- `Linux >= 2de451a329cf662beeba71f63c7f83ee24ca6642 < a13bfa4fe0d6949cea14718df2d1fe84c38cd113`\n- `Linux 6.7`\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":0.1,"exploitation":0,"ransomware":0},"changes":[]}