{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31749","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.139Z","datePublished":"2026-05-01T14:14:42.227Z","dateUpdated":"2026-05-11T22:15:02.951Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:15:02.951Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: ni_atmio16d: Fix invalid clean-up after failed attach\n\nIf the driver's COMEDI \"attach\" handler function (`atmio16d_attach()`)\nreturns an error, the COMEDI core will call the driver's \"detach\"\nhandler function (`atmio16d_detach()`) to clean up.  This calls\n`reset_atmio16d()` unconditionally, but depending on where the error\noccurred in the attach handler, the device may not have been\nsufficiently initialized to call `reset_atmio16d()`.  It uses\n`dev->iobase` as the I/O port base address and `dev->private` as the\npointer to the COMEDI device's private data structure.  `dev->iobase`\nmay still be set to its initial value of 0, which would result in\nundesired writes to low I/O port addresses.  `dev->private` may still be\n`NULL`, which would result in null pointer dereferences.\n\nFix `atmio16d_detach()` by checking that `dev->private` is valid\n(non-null) before calling `reset_atmio16d()`.  This implies that\n`dev->iobase` was set correctly since that is set up before\n`dev->private`."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/comedi/drivers/ni_atmio16d.c"],"versions":[{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"a01dd339ea6ac58b0967a50085622a6017351140","status":"affected","versionType":"git"},{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"933a2d6a95f9bfb203e562c9be1dd990c735535c","status":"affected","versionType":"git"},{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"5d8d88c8c0eec230de8f1f60e0920a4337939a88","status":"affected","versionType":"git"},{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"f517646e008fe99ca1800601cd011b110f8684ae","status":"affected","versionType":"git"},{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"3848ae00b1642e2c98ff8cbfd2d3b38c6f53b5c3","status":"affected","versionType":"git"},{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"43c68a2c7cc35b7c2a83c285cb4ad3d472b8caa2","status":"affected","versionType":"git"},{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"d07d97ca4f7fac467cdcf4a012690853958b7e89","status":"affected","versionType":"git"},{"version":"2323b276308a5da5774b778f39c7fd94b2a3022a","lessThan":"101ab946b79ad83b36d5cfd47de587492a80acf0","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/comedi/drivers/ni_atmio16d.c"],"versions":[{"version":"2.6.30","status":"affected"},{"version":"0","lessThan":"2.6.30","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.168","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.134","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.81","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.22","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.12","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.6.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.12.81"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.30","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a01dd339ea6ac58b0967a50085622a6017351140"},{"url":"https://git.kernel.org/stable/c/933a2d6a95f9bfb203e562c9be1dd990c735535c"},{"url":"https://git.kernel.org/stable/c/5d8d88c8c0eec230de8f1f60e0920a4337939a88"},{"url":"https://git.kernel.org/stable/c/f517646e008fe99ca1800601cd011b110f8684ae"},{"url":"https://git.kernel.org/stable/c/3848ae00b1642e2c98ff8cbfd2d3b38c6f53b5c3"},{"url":"https://git.kernel.org/stable/c/43c68a2c7cc35b7c2a83c285cb4ad3d472b8caa2"},{"url":"https://git.kernel.org/stable/c/d07d97ca4f7fac467cdcf4a012690853958b7e89"},{"url":"https://git.kernel.org/stable/c/101ab946b79ad83b36d5cfd47de587492a80acf0"}],"title":"comedi: ni_atmio16d: Fix invalid clean-up after failed attach","x_generator":{"engine":"bippy-1.2.0"}}}}