{"id":"CVE-2021-46917","state":"PUBLISHED","title":"dmaengine: idxd: fix wq cleanup of WQCFG registers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: fix wq cleanup of WQCFG registers\n\nA pre-release silicon erratum workaround where wq reset does not clear\nWQCFG registers was leaked into upstream code. Use wq reset command\ninstead of blasting the MMIO region. This also address an issue where\nwe clobber registers in future devices.","publishedAt":"2024-02-27T06:53:55.427Z","updatedAt":"2026-05-23T15:18:43.166Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"da32b28c95a79e399e18c03f8178f41aec9c66e4","status":"affected","lessThan":"e5eb9757fe4c2392e069246ae78badc573af1833","versionType":"git"},{"version":"da32b28c95a79e399e18c03f8178f41aec9c66e4","status":"affected","lessThan":"f7dc8f5619165e1fa3383d0c2519f502d9e2a1a9","versionType":"git"},{"version":"da32b28c95a79e399e18c03f8178f41aec9c66e4","status":"affected","lessThan":"ea9aadc06a9f10ad20a90edc0a484f1147d88a7a","versionType":"git"},{"version":"2a2df2bd10de44c3804661ed15157817c12d6291","status":"affected","versionType":"git"},{"version":"5.7.10","status":"affected","lessThan":"5.8","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/idxd/device.c","drivers/dma/idxd/idxd.h","drivers/dma/idxd/sysfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.32","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.11.16","status":"unaffected","lessThanOrEqual":"5.11.*","versionType":"semver"},{"version":"5.12","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/idxd/device.c","drivers/dma/idxd/idxd.h","drivers/dma/idxd/sysfs.c"]}],"references":["https://git.kernel.org/stable/c/e5eb9757fe4c2392e069246ae78badc573af1833","https://git.kernel.org/stable/c/f7dc8f5619165e1fa3383d0c2519f502d9e2a1a9","https://git.kernel.org/stable/c/ea9aadc06a9f10ad20a90edc0a484f1147d88a7a"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:16.371Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/46xxx/CVE-2021-46917.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-46917","state":"PUBLISHED","datePublished":"2024-02-27T06:53:55.427Z","dateUpdated":"2026-05-23T15:18:43.166Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-25T13:45:52.719Z"},"containers":{"cna":{"title":"dmaengine: idxd: fix wq cleanup of WQCFG registers","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: fix wq cleanup of WQCFG registers\n\nA pre-release silicon erratum workaround where wq reset does not clear\nWQCFG registers was leaked into upstream code. 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