{"id":"CVE-2025-71200","state":"PUBLISHED","title":"mmc: sdhci-of-dwcmshc: Prevent illegal clock reduction in HS200/HS400 mode","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: sdhci-of-dwcmshc: Prevent illegal clock reduction in HS200/HS400 mode\n\nWhen operating in HS200 or HS400 timing modes, reducing the clock frequency\nbelow 52MHz will lead to link broken as the Rockchip DWC MSHC controller\nrequires maintaining a minimum clock of 52MHz in these modes.\n\nAdd a check to prevent illegal clock reduction through debugfs:\n\nroot@debian:/# echo 50000000 > /sys/kernel/debug/mmc0/clock\nroot@debian:/# [   30.090146] mmc0: running CQE recovery\nmmc0: cqhci: Failed to halt\nmmc0: cqhci: spurious TCN for tag 0\nWARNING: drivers/mmc/host/cqhci-core.c:797 at cqhci_irq+0x254/0x818, CPU#1: kworker/1:0H/24\nModules linked in:\nCPU: 1 UID: 0 PID: 24 Comm: kworker/1:0H Not tainted 6.19.0-rc1-00001-g09db0998649d-dirty #204 PREEMPT\nHardware name: Rockchip RK3588 EVB1 V10 Board (DT)\nWorkqueue: kblockd blk_mq_run_work_fn\npstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : cqhci_irq+0x254/0x818\nlr : cqhci_irq+0x254/0x818\n...","publishedAt":"2026-02-14T15:09:45.689Z","updatedAt":"2026-05-11T21:56:35.824Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"59b8a1ca6df4db2ca250e9eeab74e2b0068d69e9","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"f2677d6e2bbc5ba2030825522d2afd0542b038a3","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"de0ad7156036a50982bcb75a080e4af284502be2","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"36be050f21dea7a3a76dff5a031da6274e8ee468","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"3009738a855cf938bbfc9078bec725031ae623a4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/sdhci-of-dwcmshc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.122","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.68","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.8","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/sdhci-of-dwcmshc.c"]}],"references":["https://git.kernel.org/stable/c/59b8a1ca6df4db2ca250e9eeab74e2b0068d69e9","https://git.kernel.org/stable/c/f2677d6e2bbc5ba2030825522d2afd0542b038a3","https://git.kernel.org/stable/c/de0ad7156036a50982bcb75a080e4af284502be2","https://git.kernel.org/stable/c/36be050f21dea7a3a76dff5a031da6274e8ee468","https://git.kernel.org/stable/c/3009738a855cf938bbfc9078bec725031ae623a4"],"weaknesses":[],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/71xxx/CVE-2025-71200.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71200","state":"PUBLISHED","datePublished":"2026-02-14T15:09:45.689Z","dateUpdated":"2026-05-11T21:56:35.824Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-31T11:36:51.193Z"},"containers":{"cna":{"title":"mmc: sdhci-of-dwcmshc: Prevent illegal clock reduction in HS200/HS400 mode","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: sdhci-of-dwcmshc: Prevent illegal clock reduction in HS200/HS400 mode\n\nWhen operating in HS200 or HS400 timing modes, reducing the clock frequency\nbelow 52MHz will lead to link broken as the Rockchip DWC MSHC controller\nrequires maintaining a minimum clock of 52MHz in these modes.\n\nAdd a check to prevent illegal clock reduction through debugfs:\n\nroot@debian:/# echo 50000000 > /sys/kernel/debug/mmc0/clock\nroot@debian:/# [   30.090146] mmc0: running CQE recovery\nmmc0: cqhci: Failed to halt\nmmc0: cqhci: spurious TCN for tag 0\nWARNING: drivers/mmc/host/cqhci-core.c:797 at cqhci_irq+0x254/0x818, CPU#1: kworker/1:0H/24\nModules linked in:\nCPU: 1 UID: 0 PID: 24 Comm: kworker/1:0H Not tainted 6.19.0-rc1-00001-g09db0998649d-dirty #204 PREEMPT\nHardware name: Rockchip RK3588 EVB1 V10 Board (DT)\nWorkqueue: kblockd blk_mq_run_work_fn\npstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : cqhci_irq+0x254/0x818\nlr : cqhci_irq+0x254/0x818\n..."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"59b8a1ca6df4db2ca250e9eeab74e2b0068d69e9","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"f2677d6e2bbc5ba2030825522d2afd0542b038a3","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"de0ad7156036a50982bcb75a080e4af284502be2","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"36be050f21dea7a3a76dff5a031da6274e8ee468","versionType":"git"},{"version":"c6f361cba51c536e7a6af31973c6a4e5d7e4e2e4","status":"affected","lessThan":"3009738a855cf938bbfc9078bec725031ae623a4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/sdhci-of-dwcmshc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.122","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.68","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.8","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mmc/host/sdhci-of-dwcmshc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/59b8a1ca6df4db2ca250e9eeab74e2b0068d69e9"},{"url":"https://git.kernel.org/stable/c/f2677d6e2bbc5ba2030825522d2afd0542b038a3"},{"url":"https://git.kernel.org/stable/c/de0ad7156036a50982bcb75a080e4af284502be2"},{"url":"https://git.kernel.org/stable/c/36be050f21dea7a3a76dff5a031da6274e8ee468"},{"url":"https://git.kernel.org/stable/c/3009738a855cf938bbfc9078bec725031ae623a4"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:56:35.824Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.6.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.12.68"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.18.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}