{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-49612","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T02:21:30.418Z","datePublished":"2025-02-26T02:23:34.263Z","dateUpdated":"2025-05-04T08:41:47.323Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:41:47.323Z"},"descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/power_supply_core.c"],"versions":[{"version":"a4585ba2050f460f749bbaf2b67bd56c41e30283","lessThan":"a762cee5d933fe4e2e1b773d60fc74fb8248d8c4","status":"affected","versionType":"git"},{"version":"a4585ba2050f460f749bbaf2b67bd56c41e30283","lessThan":"093d27bb6f2d1963f927ef59c9a2d37059175426","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/power/supply/power_supply_core.c"],"versions":[{"version":"5.17","status":"affected"},{"version":"0","lessThan":"5.17","status":"unaffected","versionType":"semver"},{"version":"5.18.13","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.18.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a762cee5d933fe4e2e1b773d60fc74fb8248d8c4"},{"url":"https://git.kernel.org/stable/c/093d27bb6f2d1963f927ef59c9a2d37059175426"}],"title":"power: supply: core: Fix boundary conditions in interpolation","x_generator":{"engine":"bippy-1.2.0"}}}}