{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43375", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:56.006Z", "datePublished": "2026-05-08T14:21:25.193Z", "dateUpdated": "2026-05-11T22:23:22.359Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:23:22.359Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mctp: fix device leak on probe failure\n\nDriver core holds a reference to the USB interface and its parent USB\ndevice while the interface is bound to a driver and there is no need to\ntake additional references unless the structures are needed after\ndisconnect.\n\nThis driver takes a reference to the USB device during probe but does\nnot to release it on probe failures.\n\nDrop the redundant device reference to fix the leak, reduce cargo\nculting, make it easier to spot drivers where an extra reference is\nneeded, and reduce the risk of further memory leaks."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/mctp/mctp-usb.c"], "versions": [{"version": "0791c0327a6e4e7691d6fc5ad334c215de04dcc9", "lessThan": "3224990fb16a831aabc50b67c74f5d0074ce80dd", "status": "affected", "versionType": "git"}, {"version": "0791c0327a6e4e7691d6fc5ad334c215de04dcc9", "lessThan": "ec9538f9b5cd1db5e8c612aa636b6119b6355c5d", "status": "affected", "versionType": "git"}, {"version": "0791c0327a6e4e7691d6fc5ad334c215de04dcc9", "lessThan": "224a0d284c3caf1951302d1744a714784febed71", "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/net/mctp/mctp-usb.c"], "versions": [{"version": "6.15", "status": "affected"}, {"version": "0", "lessThan": "6.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.19", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.9", "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": "6.15", "versionEndExcluding": "6.18.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "6.19.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3224990fb16a831aabc50b67c74f5d0074ce80dd"}, {"url": "https://git.kernel.org/stable/c/ec9538f9b5cd1db5e8c612aa636b6119b6355c5d"}, {"url": "https://git.kernel.org/stable/c/224a0d284c3caf1951302d1744a714784febed71"}], "title": "net: mctp: fix device leak on probe failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: net: mctp: fix device leak on probe failure", "id": "2468173", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468173"}, "csaw": false, "cwe": "CWE-911", "details": ["A flaw was found in the Linux kernel's MCTP (Message Control Transport Protocol) implementation. During device probe failures, a redundant reference to a USB device is not properly released. This can lead to memory leaks, potentially resulting in a Denial of Service (DoS) condition on the affected system."], "name": "CVE-2026-43375", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43375\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43375\nhttps://lore.kernel.org/linux-cve-announce/2026050831-CVE-2026-43375-394d@gregkh/T"]}

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