{"id":"CVE-2025-37850","state":"PUBLISHED","title":"pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()\n\nWith CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a\ndivide-by-zero in the following line:\n\n\tdo_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm]));\n\ndue to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate()\nreturns zero.\n\nThis is presumably just a theoretical problem: COMPILE_TEST overrides\nthe dependency on RALINK which would select COMMON_CLK.  Regardless it's\na good idea to check for the error explicitly to avoid divide-by-zero.\n\nFixes the following warning:\n\n  drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section\n\n[ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]","publishedAt":"2025-05-09T06:41:57.784Z","updatedAt":"2026-05-11T21:16:19.020Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"8b9f60725d74b72c238e4437c957d0217746b506","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"e1206d8e1651c9f62e5640b69b14d925b1a0a00a","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"f3e9cf266c2c103cf071e15d7a17e2c699fff3c5","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"8ddbec73ea2598d8414e8f7103241b55cf877010","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"4cb15042b5f3ec0474e91cf379120cc597625dbb","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"c343856ff2689ce0afef823592732fc178ef4aac","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"7ca59947b5fcf94e7ea4029d1bd0f7c41500a161","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pwm/pwm-mediatek.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","versionType":"semver"},{"version":"5.4.293","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.237","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.24","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.12","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14.3","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pwm/pwm-mediatek.c"]}],"references":["https://git.kernel.org/stable/c/8b9f60725d74b72c238e4437c957d0217746b506","https://git.kernel.org/stable/c/e1206d8e1651c9f62e5640b69b14d925b1a0a00a","https://git.kernel.org/stable/c/e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b","https://git.kernel.org/stable/c/f3e9cf266c2c103cf071e15d7a17e2c699fff3c5","https://git.kernel.org/stable/c/8ddbec73ea2598d8414e8f7103241b55cf877010","https://git.kernel.org/stable/c/4cb15042b5f3ec0474e91cf379120cc597625dbb","https://git.kernel.org/stable/c/c343856ff2689ce0afef823592732fc178ef4aac","https://git.kernel.org/stable/c/77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b","https://git.kernel.org/stable/c/7ca59947b5fcf94e7ea4029d1bd0f7c41500a161","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:03.054Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/37xxx/CVE-2025-37850.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-37850","state":"PUBLISHED","datePublished":"2025-05-09T06:41:57.784Z","dateUpdated":"2026-05-11T21:16:19.020Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T04:51:23.954Z"},"containers":{"cna":{"title":"pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()\n\nWith CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a\ndivide-by-zero in the following line:\n\n\tdo_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm]));\n\ndue to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate()\nreturns zero.\n\nThis is presumably just a theoretical problem: COMPILE_TEST overrides\nthe dependency on RALINK which would select COMMON_CLK.  Regardless it's\na good idea to check for the error explicitly to avoid divide-by-zero.\n\nFixes the following warning:\n\n  drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section\n\n[ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"8b9f60725d74b72c238e4437c957d0217746b506","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"e1206d8e1651c9f62e5640b69b14d925b1a0a00a","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"f3e9cf266c2c103cf071e15d7a17e2c699fff3c5","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"8ddbec73ea2598d8414e8f7103241b55cf877010","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"4cb15042b5f3ec0474e91cf379120cc597625dbb","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"c343856ff2689ce0afef823592732fc178ef4aac","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b","versionType":"git"},{"version":"caf065f8fd583b43a3f95d84c8a0a0d07597963b","status":"affected","lessThan":"7ca59947b5fcf94e7ea4029d1bd0f7c41500a161","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pwm/pwm-mediatek.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","versionType":"semver"},{"version":"5.4.293","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.237","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.24","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.12","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14.3","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pwm/pwm-mediatek.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8b9f60725d74b72c238e4437c957d0217746b506"},{"url":"https://git.kernel.org/stable/c/e1206d8e1651c9f62e5640b69b14d925b1a0a00a"},{"url":"https://git.kernel.org/stable/c/e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b"},{"url":"https://git.kernel.org/stable/c/f3e9cf266c2c103cf071e15d7a17e2c699fff3c5"},{"url":"https://git.kernel.org/stable/c/8ddbec73ea2598d8414e8f7103241b55cf877010"},{"url":"https://git.kernel.org/stable/c/4cb15042b5f3ec0474e91cf379120cc597625dbb"},{"url":"https://git.kernel.org/stable/c/c343856ff2689ce0afef823592732fc178ef4aac"},{"url":"https://git.kernel.org/stable/c/77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b"},{"url":"https://git.kernel.org/stable/c/7ca59947b5fcf94e7ea4029d1bd0f7c41500a161"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:16:19.020Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.4.293"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.10.237"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.15.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.1.135"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.6.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.12.24"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.13.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.14.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.15"}]}]}],"x_generat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Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T19:56:24.773Z"}}]}}}