{"api_version":"1","generated_at":"2026-09-17T23:31:14+00:00","cve":"CVE-2026-93042","urls":{"html":"https://cve.report/CVE-2026-93042","api":"https://cve.report/api/cve/CVE-2026-93042.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93042","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93042"},"summary":{"title":"dmaengine: dw-edma: Terminate all descriptors without callbacks","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Terminate all descriptors without callbacks\n\nThe DMA Engine client documentation says in the \"Terminate APIs\" section\nof Documentation/driver-api/dmaengine/client.rst:\n\n\"No callback functions will be called for any incomplete transfers.\"\n\ndw-edma instead calls vchan_cookie_complete() when a deferred STOP reaches\nthe interrupt handler. This schedules a callback for the active descriptor\nand leaves other issued or submitted descriptors queued. A late callback\nafter dmaengine_terminate_sync() can dereference client state that has\nalready been freed, while leftover descriptors may later restart into\nreused buffers or leak.\n\nMove all issued and submitted descriptors to the terminated list whenever\ntermination completes. For a pending STOP, do this from both the DONE and\nABORT paths. Complete their cookies in order without scheduling callbacks.\n\nA STOP can remain pending until the running transfer raises an\ninterrupt. Make device_synchronize() wait for such a pending STOP to\ncomplete before releasing terminated descriptors. Reuse it from\nfree_chan_resources(), then release the remaining virt-dma resources.\nSleep instead of busy-polling while waiting, and warn if the existing\ntimeout expires.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:57","updated_at":"2026-09-17 17:17:57"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/be87d86537de7ea6fd025f41033d2faff880973f","name":"https://git.kernel.org/stable/c/be87d86537de7ea6fd025f41033d2faff880973f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4793f9099a1cadf4e37f3a03d524af6bce88a0ea","name":"https://git.kernel.org/stable/c/4793f9099a1cadf4e37f3a03d524af6bce88a0ea","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/65e387b95d3855aa894ac729e1778e5bcb9083cb","name":"https://git.kernel.org/stable/c/65e387b95d3855aa894ac729e1778e5bcb9083cb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/99109a51efd28c9a661fbfb9469b023c517b31d1","name":"https://git.kernel.org/stable/c/99109a51efd28c9a661fbfb9469b023c517b31d1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7","name":"https://git.kernel.org/stable/c/f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93042","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93042","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf 65e387b95d3855aa894ac729e1778e5bcb9083cb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf 4793f9099a1cadf4e37f3a03d524af6bce88a0ea git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf be87d86537de7ea6fd025f41033d2faff880973f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf 99109a51efd28c9a661fbfb9469b023c517b31d1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.3","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.3 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/dma/dw-edma/dw-edma-core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"65e387b95d3855aa894ac729e1778e5bcb9083cb","status":"affected","version":"e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf","versionType":"git"},{"lessThan":"4793f9099a1cadf4e37f3a03d524af6bce88a0ea","status":"affected","version":"e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf","versionType":"git"},{"lessThan":"be87d86537de7ea6fd025f41033d2faff880973f","status":"affected","version":"e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf","versionType":"git"},{"lessThan":"f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7","status":"affected","version":"e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf","versionType":"git"},{"lessThan":"99109a51efd28c9a661fbfb9469b023c517b31d1","status":"affected","version":"e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/dma/dw-edma/dw-edma-core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.3"},{"lessThan":"5.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"5.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Terminate all descriptors without callbacks\n\nThe DMA Engine client documentation says in the \"Terminate APIs\" section\nof Documentation/driver-api/dmaengine/client.rst:\n\n\"No callback functions will be called for any incomplete transfers.\"\n\ndw-edma instead calls vchan_cookie_complete() when a deferred STOP reaches\nthe interrupt handler. This schedules a callback for the active descriptor\nand leaves other issued or submitted descriptors queued. A late callback\nafter dmaengine_terminate_sync() can dereference client state that has\nalready been freed, while leftover descriptors may later restart into\nreused buffers or leak.\n\nMove all issued and submitted descriptors to the terminated list whenever\ntermination completes. For a pending STOP, do this from both the DONE and\nABORT paths. Complete their cookies in order without scheduling callbacks.\n\nA STOP can remain pending until the running transfer raises an\ninterrupt. Make device_synchronize() wait for such a pending STOP to\ncomplete before releasing terminated descriptors. Reuse it from\nfree_chan_resources(), then release the remaining virt-dma resources.\nSleep instead of busy-polling while waiting, and warn if the existing\ntimeout expires."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:10:34.911Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/65e387b95d3855aa894ac729e1778e5bcb9083cb"},{"url":"https://git.kernel.org/stable/c/4793f9099a1cadf4e37f3a03d524af6bce88a0ea"},{"url":"https://git.kernel.org/stable/c/be87d86537de7ea6fd025f41033d2faff880973f"},{"url":"https://git.kernel.org/stable/c/f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7"},{"url":"https://git.kernel.org/stable/c/99109a51efd28c9a661fbfb9469b023c517b31d1"}],"title":"dmaengine: dw-edma: Terminate all descriptors without callbacks","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93042","datePublished":"2026-09-17T16:10:34.911Z","dateReserved":"2026-09-17T15:57:05.657Z","dateUpdated":"2026-09-17T16:10:34.911Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:57","lastModifiedDate":"2026-09-17 17:17:57","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93042","Ordinal":"1","Title":"dmaengine: dw-edma: Terminate all descriptors without callbacks","CVE":"CVE-2026-93042","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93042","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Terminate all descriptors without callbacks\n\nThe DMA Engine client documentation says in the \"Terminate APIs\" section\nof Documentation/driver-api/dmaengine/client.rst:\n\n\"No callback functions will be called for any incomplete transfers.\"\n\ndw-edma instead calls vchan_cookie_complete() when a deferred STOP reaches\nthe interrupt handler. This schedules a callback for the active descriptor\nand leaves other issued or submitted descriptors queued. A late callback\nafter dmaengine_terminate_sync() can dereference client state that has\nalready been freed, while leftover descriptors may later restart into\nreused buffers or leak.\n\nMove all issued and submitted descriptors to the terminated list whenever\ntermination completes. For a pending STOP, do this from both the DONE and\nABORT paths. Complete their cookies in order without scheduling callbacks.\n\nA STOP can remain pending until the running transfer raises an\ninterrupt. Make device_synchronize() wait for such a pending STOP to\ncomplete before releasing terminated descriptors. Reuse it from\nfree_chan_resources(), then release the remaining virt-dma resources.\nSleep instead of busy-polling while waiting, and warn if the existing\ntimeout expires.","Type":"Description","Title":"dmaengine: dw-edma: Terminate all descriptors without callbacks"}]}}}