{"id":"CVE-2022-49612","title":"power: supply: core: Fix boundary conditions in interpolation","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: core: Fix boundary conditions in interpolation\n\nThe functions power_supply_temp2resist_simple and power_supply_ocv2cap_simple\nhandle boundary conditions …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a4585ba2050f460f749bbaf2b67bd56c41e30283 < a762cee5d933fe4e2e1b773d60fc74fb8248d8c4","Linux >= a4585ba2050f460f749bbaf2b67bd56c41e30283 < 093d27bb6f2d1963f927ef59c9a2d37059175426","Linux 5.17"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T19:46:19.477904Z"},"published":"2025-02-26","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:49:40.851Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-49612","references":[{"url":"https://git.kernel.org/stable/c/a762cee5d933fe4e2e1b773d60fc74fb8248d8c4"},{"url":"https://git.kernel.org/stable/c/093d27bb6f2d1963f927ef59c9a2d37059175426"}],"tags":["cve.org"],"epss":0.00277,"epssPercentile":0.20251,"ingestedAt":"2026-11-05T22:38:31.580Z","slug":"CVE-2022-49612","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: core: Fix boundary conditions in interpolation\n\nThe functions power_supply_temp2resist_simple and power_supply_ocv2cap_simple\nhandle boundary conditions incorrectly.\nThe change was introduced in a4585ba2050f460f749bbaf2b67bd56c41e30283\n(\"power: supply: core: Use library interpolation\").\nThere are two issues: First, the lines \"high = i - 1\" and \"high = i\" in ocv2cap\nhave the wrong order compared to temp2resist. As a consequence, ocv2cap\nsets high=-1 if ocv>table[0].ocv, which causes an out-of-bounds read.\nSecond, the logic of temp2resist is also not correct.\nConsider the case table[] = {{20, 100}, {10, 80}, {0, 60}}.\nFor temp=5, we expect a resistance of 70% by interpolation.\nHowever, temp2resist sets high=low=2 and returns 60.\n\n## Affected\n\n- `Linux >= a4585ba2050f460f749bbaf2b67bd56c41e30283 < a762cee5d933fe4e2e1b773d60fc74fb8248d8c4`\n- `Linux >= a4585ba2050f460f749bbaf2b67bd56c41e30283 < 093d27bb6f2d1963f927ef59c9a2d37059175426`\n- `Linux 5.17`\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":[]}