{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64345", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.781Z", "datePublished": "2026-07-25T08:50:07.069Z", "dateUpdated": "2026-07-25T08:50:07.069Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:50:07.069Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_printer: take kref only for successful open\n\nprinter_open() returns -EBUSY when the character device is already\nopen, but it increments dev->kref regardless of the return value. VFS\ndoes not call ->release() for a failed open, so every rejected second\nopen permanently leaks one reference.\n\nMove kref_get() into the successful-open branch."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_printer.c"], "versions": [{"version": "e8d5f92b8d30bb4ade76494490c3c065e12411b1", "lessThan": "94ec20d97aa51547965a539f660a1fe79c6929a3", "status": "affected", "versionType": "git"}, {"version": "e8d5f92b8d30bb4ade76494490c3c065e12411b1", "lessThan": "75c0ad13e136961328253742501b4efc3988a587", "status": "affected", "versionType": "git"}, {"version": "e8d5f92b8d30bb4ade76494490c3c065e12411b1", "lessThan": "bf20c94fa6aaff945f0ae3a23f3212cd299f28d9", "status": "affected", "versionType": "git"}, {"version": "e8d5f92b8d30bb4ade76494490c3c065e12411b1", "lessThan": "8a5eba992c862b0c94411eecf9b7121e8636db38", "status": "affected", "versionType": "git"}, {"version": "e8d5f92b8d30bb4ade76494490c3c065e12411b1", "lessThan": "7f1f24c367938c5537e2308bf9a965f051d14774", "status": "affected", "versionType": "git"}, {"version": "e8d5f92b8d30bb4ade76494490c3c065e12411b1", "lessThan": "30adce93d5c4a5a1ec29d9249e3fdfcc391d406b", "status": "affected", "versionType": "git"}, {"version": "25c95c6bd4dc50a3c20de0fa7f450ea02b2320fc", "status": "affected", "versionType": "git"}, {"version": "4a47581cf010dc351d8069978080fdb000c0776d", "status": "affected", "versionType": "git"}, {"version": "d9fe88b2a38dc700bf5bd3a09c7cd11bbc248367", "status": "affected", "versionType": "git"}, {"version": "cedb0187b8ba929c3f76f28e6bc25804d65f8a54", "status": "affected", "versionType": "git"}, {"version": "e9e791f5c39ab30e374a3b1a9c25ca7ff24988f3", "status": "affected", "versionType": "git"}, {"version": "34f026263889e2827e04acdc3a0eb9ecbd191ef0", "status": "affected", "versionType": "git"}, {"version": "5f845e5d18d151230476cf90aa46449f69ba2ef1", "status": "affected", "versionType": "git"}, {"version": "4.4.241", "lessThan": "4.5", "status": "affected", "versionType": "semver"}, {"version": "4.9.241", "lessThan": "4.10", "status": "affected", "versionType": "semver"}, {"version": "4.14.203", "lessThan": "4.15", "status": "affected", "versionType": "semver"}, {"version": "4.19.154", "lessThan": "4.20", "status": "affected", "versionType": "semver"}, {"version": "5.4.73", "lessThan": "5.5", "status": "affected", "versionType": "semver"}, {"version": "5.8.17", "lessThan": "5.9", "status": "affected", "versionType": "semver"}, {"version": "5.9.2", "lessThan": "5.10", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_printer.c"], "versions": [{"version": "5.10", "status": "affected"}, {"version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc3", "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": "5.10", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "7.2-rc3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.241"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.9.241"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.203"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.154"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.73"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8.17"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.9.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/94ec20d97aa51547965a539f660a1fe79c6929a3"}, {"url": "https://git.kernel.org/stable/c/75c0ad13e136961328253742501b4efc3988a587"}, {"url": "https://git.kernel.org/stable/c/bf20c94fa6aaff945f0ae3a23f3212cd299f28d9"}, {"url": "https://git.kernel.org/stable/c/8a5eba992c862b0c94411eecf9b7121e8636db38"}, {"url": "https://git.kernel.org/stable/c/7f1f24c367938c5537e2308bf9a965f051d14774"}, {"url": "https://git.kernel.org/stable/c/30adce93d5c4a5a1ec29d9249e3fdfcc391d406b"}], "title": "usb: gadget: f_printer: take kref only for successful open", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: usb: gadget: f_printer: take kref only for successful open", "id": "2507224", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507224"}, "csaw": false, "cwe": "CWE-911", "details": ["A flaw was found in the Linux kernel's USB printer gadget driver. The `printer_open()` function incorrectly increments a reference counter even when the device is already in use and the open operation fails. This prevents the reference from being properly released, leading to a permanent leak of system resources. Over time, repeated failed attempts to open the printer device can exhaust available resources, potentially causing a denial of service (DoS) for affected systems."], "name": "CVE-2026-64345", "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": "2026-07-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64345\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64345\nhttps://lore.kernel.org/linux-cve-announce/2026072517-CVE-2026-64345-5069@gregkh/T"]}