{"id":"CVE-2021-47003","state":"PUBLISHED","title":"dmaengine: idxd: Fix potential null dereference on pointer status","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix potential null dereference on pointer status\n\nThere are calls to idxd_cmd_exec that pass a null status pointer however\na recent commit has added an assignment to *status that can end up\nwith a null pointer dereference.  The function expects a null status\npointer sometimes as there is a later assignment to *status where\nstatus is first null checked.  Fix the issue by null checking status\nbefore making the assignment.\n\nAddresses-Coverity: (\"Explicit null dereferenced\")","publishedAt":"2024-02-28T08:13:24.712Z","updatedAt":"2026-05-23T15:19:00.434Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"40e3b5c128645d2ddad12310c7be98758cafb2b0","status":"affected","lessThan":"5756f757c72501ef1a16f5f63f940623044180e9","versionType":"git"},{"version":"89e3becd8f821e507052e012d2559dcda59f538e","status":"affected","lessThan":"2280b4cc29d8cdd2be3d1b2d1ea4f958e2131c97","versionType":"git"},{"version":"89e3becd8f821e507052e012d2559dcda59f538e","status":"affected","lessThan":"7bc402f843e7817a4a808e7b9ab0bcd7ffd55bfa","versionType":"git"},{"version":"89e3becd8f821e507052e012d2559dcda59f538e","status":"affected","lessThan":"28ac8e03c43dfc6a703aa420d18222540b801120","versionType":"git"},{"version":"5.10.17","status":"affected","lessThan":"5.10.38","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/idxd/device.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.10.38","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.11.22","status":"unaffected","lessThanOrEqual":"5.11.*","versionType":"semver"},{"version":"5.12.5","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13","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"]}],"references":["https://git.kernel.org/stable/c/5756f757c72501ef1a16f5f63f940623044180e9","https://git.kernel.org/stable/c/2280b4cc29d8cdd2be3d1b2d1ea4f958e2131c97","https://git.kernel.org/stable/c/7bc402f843e7817a4a808e7b9ab0bcd7ffd55bfa","https://git.kernel.org/stable/c/28ac8e03c43dfc6a703aa420d18222540b801120"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47003.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47003","state":"PUBLISHED","datePublished":"2024-02-28T08:13:24.712Z","dateUpdated":"2026-05-23T15:19:00.434Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-27T18:42:55.951Z"},"containers":{"cna":{"title":"dmaengine: idxd: Fix potential null dereference on pointer status","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix potential null dereference on pointer status\n\nThere are calls to idxd_cmd_exec that pass a null status pointer however\na recent commit has added an assignment to *status that can end up\nwith a null pointer dereference.  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