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Description

In the Linux kernel, the following vulnerability has been resolved: pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config() With CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a divide-by-zero in the following line: do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm])); due to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate() returns zero. This is presumably just a theoretical problem: COMPILE_TEST overrides the dependency on RALINK which would select COMMON_CLK. Regardless it's a good idea to check for the error explicitly to avoid divide-by-zero. Fixes the following warning: drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section [ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]

PUBLISHED Reserved 2025-04-16 | Published 2025-05-09 | Updated 2025-05-26 | Assigner Linux

Product status

Default status
unaffected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before 8b9f60725d74b72c238e4437c957d0217746b506
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before e1206d8e1651c9f62e5640b69b14d925b1a0a00a
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before f3e9cf266c2c103cf071e15d7a17e2c699fff3c5
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before 8ddbec73ea2598d8414e8f7103241b55cf877010
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before 4cb15042b5f3ec0474e91cf379120cc597625dbb
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before c343856ff2689ce0afef823592732fc178ef4aac
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before 77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b
affected

caf065f8fd583b43a3f95d84c8a0a0d07597963b (git) before 7ca59947b5fcf94e7ea4029d1bd0f7c41500a161
affected

Default status
affected

4.12
affected

Any version before 4.12
unaffected

5.4.293 (semver)
unaffected

5.10.237 (semver)
unaffected

5.15.181 (semver)
unaffected

6.1.135 (semver)
unaffected

6.6.88 (semver)
unaffected

6.12.24 (semver)
unaffected

6.13.12 (semver)
unaffected

6.14.3 (semver)
unaffected

6.15 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/8b9f60725d74b72c238e4437c957d0217746b506

git.kernel.org/...c/e1206d8e1651c9f62e5640b69b14d925b1a0a00a

git.kernel.org/...c/e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b

git.kernel.org/...c/f3e9cf266c2c103cf071e15d7a17e2c699fff3c5

git.kernel.org/...c/8ddbec73ea2598d8414e8f7103241b55cf877010

git.kernel.org/...c/4cb15042b5f3ec0474e91cf379120cc597625dbb

git.kernel.org/...c/c343856ff2689ce0afef823592732fc178ef4aac

git.kernel.org/...c/77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b

git.kernel.org/...c/7ca59947b5fcf94e7ea4029d1bd0f7c41500a161

cve.org (CVE-2025-37850)

nvd.nist.gov (CVE-2025-37850)

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