{"id":"CVE-2026-90405","state":"PUBLISHED","title":"media: stm32: dcmi: fix some error handling bugs in probe()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: stm32: dcmi: fix some error handling bugs in probe()\n\nThere are a few issues here:\n\n1) After we assign:\n        chan = dma_request_chan(&pdev->dev, \"tx\");\n   Then the error paths need to clean up before returning.  The first\n   error path does a direct return.\n2) The error paths check \"dcmi->mdma_chan\" but that is not assigned\n   until later so it results in memory leaks.  Test \"mdma_chan\"\n   instead.\n3) The error handling calls dma_release_channel(dcmi->dma_chan) before\n   \"dcmi->dma_chan\" has been assigned which leads to a NULL pointer\n   dereference.  Use the \"chan\" variable instead.\n\nI also moved the call to dma_release_channel() after the call to\ndma_release_channel() so it mirrors the allocation code better.","publishedAt":"2026-09-17T16:09:34.122Z","updatedAt":"2026-10-19T09:03:09.783Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bc901885fae0a0273288666609d143e960b6ad3a","status":"affected","lessThan":"4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659","versionType":"git"},{"version":"bc901885fae0a0273288666609d143e960b6ad3a","status":"affected","lessThan":"f1d1ed39ced825615aeac61f0b6a322178756632","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/st/stm32/stm32-dcmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/st/stm32/stm32-dcmi.c"]}],"references":["https://git.kernel.org/stable/c/4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659","https://git.kernel.org/stable/c/f1d1ed39ced825615aeac61f0b6a322178756632"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90405.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90405","state":"PUBLISHED","datePublished":"2026-09-17T16:09:34.122Z","dateUpdated":"2026-10-19T09:03:09.783Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.812Z"},"containers":{"cna":{"title":"media: stm32: dcmi: fix some error handling bugs in probe()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: stm32: dcmi: fix some error handling bugs in probe()\n\nThere are a few issues here:\n\n1) After we assign:\n        chan = dma_request_chan(&pdev->dev, \"tx\");\n   Then the error paths need to clean up before returning.  The first\n   error path does a direct return.\n2) The error paths check \"dcmi->mdma_chan\" but that is not assigned\n   until later so it results in memory leaks.  Test \"mdma_chan\"\n   instead.\n3) The error handling calls dma_release_channel(dcmi->dma_chan) before\n   \"dcmi->dma_chan\" has been assigned which leads to a NULL pointer\n   dereference.  Use the \"chan\" variable instead.\n\nI also moved the call to dma_release_channel() after the call to\ndma_release_channel() so it mirrors the allocation code better."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bc901885fae0a0273288666609d143e960b6ad3a","status":"affected","lessThan":"4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659","versionType":"git"},{"version":"bc901885fae0a0273288666609d143e960b6ad3a","status":"affected","lessThan":"f1d1ed39ced825615aeac61f0b6a322178756632","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/st/stm32/stm32-dcmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.1","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/platform/st/stm32/stm32-dcmi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659"},{"url":"https://git.kernel.org/stable/c/f1d1ed39ced825615aeac61f0b6a322178756632"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:03:09.783Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}