{"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": "2026-05-01T14:14:42.227Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-01T14:14:42.227Z"}, "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"}}}}

{}

{"cveTags": [], "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`."}], "id": "CVE-2026-31749", "lastModified": "2026-05-01T15:24:14.893", "metrics": {}, "published": "2026-05-01T15:16:37.723", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/101ab946b79ad83b36d5cfd47de587492a80acf0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3848ae00b1642e2c98ff8cbfd2d3b38c6f53b5c3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/43c68a2c7cc35b7c2a83c285cb4ad3d472b8caa2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5d8d88c8c0eec230de8f1f60e0920a4337939a88"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/933a2d6a95f9bfb203e562c9be1dd990c735535c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a01dd339ea6ac58b0967a50085622a6017351140"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d07d97ca4f7fac467cdcf4a012690853958b7e89"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f517646e008fe99ca1800601cd011b110f8684ae"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{}