CVE-2026-68182

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68182", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.373Z", "datePublished": "2026-08-10T11:59:53.793Z", "dateUpdated": "2026-08-19T16:30:47.491Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:30:47.491Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: comedi_parport: deal with premature interrupt\n\nSyzbot reported a general protection fault in\n`comedi_get_is_subdevice_running()`, which was called from the interrupt\nhandler `parport_interrupt()` in the \"comedi_parport\" driver, but it\ndoes not currently have a C reproducer for the problem. It's\nprobably due to a premature interrupt for one of two reasons:\n\n1. The driver sets up the interrupt handler before the comedi subdevices\n used by the interrupt handler have been allocated, but does not\n disable the interrupt in the parallel port's CTRL register first.\n2. The driver uses a user-supplied I/O port base address which Syzbot\n would have supplied, but it might not be backed by real parallel port\n hardware.\n\nChange the initialization order in the driver's comedi \"attach\" handler\n(`parport_attach()`) so that the hardware registers are initialized\nbefore the interrupt handler is requested. This should prevent\npremature interrupts occurring for real hardware.\n\nAlso add a test to the interrupt handler to ensure the comedi device is\nfully attached and return early if it isn't."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/comedi/drivers/comedi_parport.c"], "versions": [{"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "6ed34611e569fc1a1169905c5228fd0eb2806c1b", "status": "affected", "versionType": "git"}, {"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "48ef18e5eb6b8a9c546038b2ab89a841fcd97fe7", "status": "affected", "versionType": "git"}, {"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "a88b25db815ff6edace81b0bb0f4a201133bd215", "status": "affected", "versionType": "git"}, {"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "b061bb4dca49fd93063359d3805387235818778c", "status": "affected", "versionType": "git"}, {"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "086a9ae3c5df63ec11033a8c0b3f6a1fd295ddd1", "status": "affected", "versionType": "git"}, {"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "cf26dd2d841583c54a87005c4934b92fddb930c3", "status": "affected", "versionType": "git"}, {"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "5d059ce0e6a2f6f8b97273499d47b8f917097b48", "status": "affected", "versionType": "git"}, {"version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "lessThan": "17221216ae8ce6a24e8a4e787382e3ebc81b88a8", "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/comedi_parport.c"], "versions": [{"version": "2.6.29", "status": "affected"}, {"version": "0", "lessThan": "2.6.29", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "2.6.29", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6ed34611e569fc1a1169905c5228fd0eb2806c1b"}, {"url": "https://git.kernel.org/stable/c/48ef18e5eb6b8a9c546038b2ab89a841fcd97fe7"}, {"url": "https://git.kernel.org/stable/c/a88b25db815ff6edace81b0bb0f4a201133bd215"}, {"url": "https://git.kernel.org/stable/c/b061bb4dca49fd93063359d3805387235818778c"}, {"url": "https://git.kernel.org/stable/c/086a9ae3c5df63ec11033a8c0b3f6a1fd295ddd1"}, {"url": "https://git.kernel.org/stable/c/cf26dd2d841583c54a87005c4934b92fddb930c3"}, {"url": "https://git.kernel.org/stable/c/5d059ce0e6a2f6f8b97273499d47b8f917097b48"}, {"url": "https://git.kernel.org/stable/c/17221216ae8ce6a24e8a4e787382e3ebc81b88a8"}], "title": "comedi: comedi_parport: deal with premature interrupt", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/comedi/drivers/comedi_parport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6ed34611e569fc1a1169905c5228fd0eb2806c1b", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}, {"lessThan": "48ef18e5eb6b8a9c546038b2ab89a841fcd97fe7", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}, {"lessThan": "a88b25db815ff6edace81b0bb0f4a201133bd215", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}, {"lessThan": "b061bb4dca49fd93063359d3805387235818778c", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}, {"lessThan": "086a9ae3c5df63ec11033a8c0b3f6a1fd295ddd1", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}, {"lessThan": "cf26dd2d841583c54a87005c4934b92fddb930c3", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}, {"lessThan": "5d059ce0e6a2f6f8b97273499d47b8f917097b48", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}, {"lessThan": "17221216ae8ce6a24e8a4e787382e3ebc81b88a8", "status": "affected", "version": "241ab6ad7108e51c67881f7881c5e46f0400cdb1", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/comedi/drivers/comedi_parport.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"lessThan": "2.6.29", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: comedi_parport: deal with premature interrupt\n\nSyzbot reported a general protection fault in\n`comedi_get_is_subdevice_running()`, which was called from the interrupt\nhandler `parport_interrupt()` in the \"comedi_parport\" driver, but it\ndoes not currently have a C reproducer for the problem. It's\nprobably due to a premature interrupt for one of two reasons:\n\n1. The driver sets up the interrupt handler before the comedi subdevices\n used by the interrupt handler have been allocated, but does not\n disable the interrupt in the parallel port's CTRL register first.\n2. The driver uses a user-supplied I/O port base address which Syzbot\n would have supplied, but it might not be backed by real parallel port\n hardware.\n\nChange the initialization order in the driver's comedi \"attach\" handler\n(`parport_attach()`) so that the hardware registers are initialized\nbefore the interrupt handler is requested. This should prevent\npremature interrupts occurring for real hardware.\n\nAlso add a test to the interrupt handler to ensure the comedi device is\nfully attached and return early if it isn't."}], "id": "CVE-2026-68182", "lastModified": "2026-08-19T17:20:34.343", "metrics": {}, "published": "2026-08-10T13:20:05.250", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/086a9ae3c5df63ec11033a8c0b3f6a1fd295ddd1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/17221216ae8ce6a24e8a4e787382e3ebc81b88a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/48ef18e5eb6b8a9c546038b2ab89a841fcd97fe7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5d059ce0e6a2f6f8b97273499d47b8f917097b48"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6ed34611e569fc1a1169905c5228fd0eb2806c1b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a88b25db815ff6edace81b0bb0f4a201133bd215"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b061bb4dca49fd93063359d3805387235818778c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cf26dd2d841583c54a87005c4934b92fddb930c3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: comedi_parport driver vulnerable to denial of service via premature interrupt", "id": "2513237", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513237"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncomedi: comedi_parport: deal with premature interrupt\nSyzbot reported a general protection fault in\n`comedi_get_is_subdevice_running()`, which was called from the interrupt\nhandler `parport_interrupt()` in the \"comedi_parport\" driver, but it\ndoes not currently have a C reproducer for the problem. It's\nprobably due to a premature interrupt for one of two reasons:\n1. The driver sets up the interrupt handler before the comedi subdevices\nused by the interrupt handler have been allocated, but does not\ndisable the interrupt in the parallel port's CTRL register first.\n2. The driver uses a user-supplied I/O port base address which Syzbot\nwould have supplied, but it might not be backed by real parallel port\nhardware.\nChange the initialization order in the driver's comedi \"attach\" handler\n(`parport_attach()`) so that the hardware registers are initialized\nbefore the interrupt handler is requested. This should prevent\npremature interrupts occurring for real hardware.\nAlso add a test to the interrupt handler to ensure the comedi device is\nfully attached and return early if it isn't.", "A flaw was found in the Linux kernel's `comedi_parport` driver. A local user could trigger a premature interrupt, potentially due to incorrect initialization order of hardware registers or an invalid user-supplied I/O port address. This could lead to a general protection fault, resulting in a system crash and a denial of service."], "name": "CVE-2026-68182", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T11:59:53Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68182\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68182\nhttps://git.kernel.org/stable/c/086a9ae3c5df63ec11033a8c0b3f6a1fd295ddd1\nhttps://git.kernel.org/stable/c/17221216ae8ce6a24e8a4e787382e3ebc81b88a8\nhttps://git.kernel.org/stable/c/5d059ce0e6a2f6f8b97273499d47b8f917097b48\nhttps://git.kernel.org/stable/c/b061bb4dca49fd93063359d3805387235818778c\nhttps://git.kernel.org/stable/c/cf26dd2d841583c54a87005c4934b92fddb930c3"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[241ab6ad7108e51c67881f7881c5e46f0400cdb1,b061bb4dca49fd93063359d3805387235818778c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[241ab6ad7108e51c67881f7881c5e46f0400cdb1,086a9ae3c5df63ec11033a8c0b3f6a1fd295ddd1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[241ab6ad7108e51c67881f7881c5e46f0400cdb1,cf26dd2d841583c54a87005c4934b92fddb930c3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[241ab6ad7108e51c67881f7881c5e46f0400cdb1,5d059ce0e6a2f6f8b97273499d47b8f917097b48)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[241ab6ad7108e51c67881f7881c5e46f0400cdb1,17221216ae8ce6a24e8a4e787382e3ebc81b88a8)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.29"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,2.6.29)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,8.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T16:45:03.350663+00:00", "updated": "2026-08-13T08:00:04.956314+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}