CVE-2026-98772

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98772", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.369Z", "datePublished": "2026-10-18T15:48:08.184Z", "dateUpdated": "2026-10-30T12:39:40.826Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:39:40.826Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: serial: fix port tear down use-after-free\n\nSome drivers for multiport devices access port driver data from\ncompletion handlers of shared URBs submitted at attach() or first open()\nand stopped at disconnect() or last close(), respectively.\n\nA simple NULL check before accessing the driver data makes sure that a\nport state container has at least been allocated, but a completion\nhandler can still race with port tear down.\n\nReorder the disconnect handling so that ports are not deregistered (and\ntheir driver data freed) until after all ports have been hung up and the\ndriver disconnect() callback has run so that all I/O has been stopped."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/serial/usb-serial.c"], "versions": [{"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "8ed69d299b9d7872f911f089e00cdd2ea6969d2c", "status": "affected", "versionType": "git"}, {"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "bf296d7b75bfd49dc519ad0406e89ddc5c3f02e3", "status": "affected", "versionType": "git"}, {"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "94601d83fc4811485ca6fb1d50bece589fe1c24d", "status": "affected", "versionType": "git"}, {"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "e4a6883ad9b4686a5f4bd90ff55a44d7ab65bd3c", "status": "affected", "versionType": "git"}, {"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "60cc9379c3e650d1ebfba4de63f1242537a62a32", "status": "affected", "versionType": "git"}, {"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "5e8980a81af195c49084be5b4c031085b56c7443", "status": "affected", "versionType": "git"}, {"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "e80ee74206f260eb1282e7d1339ff146a4a410d0", "status": "affected", "versionType": "git"}, {"version": "2d93148ab6988cad872e65d694c95e8944e1b626", "lessThan": "33c920f7c5952dfc42d1b8ea6efe16b1f0bb0c5b", "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/usb/serial/usb-serial.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.56", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.10", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8ed69d299b9d7872f911f089e00cdd2ea6969d2c"}, {"url": "https://git.kernel.org/stable/c/bf296d7b75bfd49dc519ad0406e89ddc5c3f02e3"}, {"url": "https://git.kernel.org/stable/c/94601d83fc4811485ca6fb1d50bece589fe1c24d"}, {"url": "https://git.kernel.org/stable/c/e4a6883ad9b4686a5f4bd90ff55a44d7ab65bd3c"}, {"url": "https://git.kernel.org/stable/c/60cc9379c3e650d1ebfba4de63f1242537a62a32"}, {"url": "https://git.kernel.org/stable/c/5e8980a81af195c49084be5b4c031085b56c7443"}, {"url": "https://git.kernel.org/stable/c/e80ee74206f260eb1282e7d1339ff146a4a410d0"}, {"url": "https://git.kernel.org/stable/c/33c920f7c5952dfc42d1b8ea6efe16b1f0bb0c5b"}], "title": "USB: serial: fix port tear down use-after-free", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/serial/usb-serial.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8ed69d299b9d7872f911f089e00cdd2ea6969d2c", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}, {"lessThan": "bf296d7b75bfd49dc519ad0406e89ddc5c3f02e3", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}, {"lessThan": "94601d83fc4811485ca6fb1d50bece589fe1c24d", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}, {"lessThan": "e4a6883ad9b4686a5f4bd90ff55a44d7ab65bd3c", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}, {"lessThan": "60cc9379c3e650d1ebfba4de63f1242537a62a32", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}, {"lessThan": "5e8980a81af195c49084be5b4c031085b56c7443", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}, {"lessThan": "e80ee74206f260eb1282e7d1339ff146a4a410d0", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}, {"lessThan": "33c920f7c5952dfc42d1b8ea6efe16b1f0bb0c5b", "status": "affected", "version": "2d93148ab6988cad872e65d694c95e8944e1b626", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/usb/serial/usb-serial.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"lessThan": "2.6.30", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.56", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.10", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nUSB: serial: fix port tear down use-after-free\n\nSome drivers for multiport devices access port driver data from\ncompletion handlers of shared URBs submitted at attach() or first open()\nand stopped at disconnect() or last close(), respectively.\n\nA simple NULL check before accessing the driver data makes sure that a\nport state container has at least been allocated, but a completion\nhandler can still race with port tear down.\n\nReorder the disconnect handling so that ports are not deregistered (and\ntheir driver data freed) until after all ports have been hung up and the\ndriver disconnect() callback has run so that all I/O has been stopped."}], "id": "CVE-2026-98772", "lastModified": "2026-10-30T13:21:26.880", "metrics": {}, "published": "2026-10-18T16:17:31.127", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/33c920f7c5952dfc42d1b8ea6efe16b1f0bb0c5b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e8980a81af195c49084be5b4c031085b56c7443"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60cc9379c3e650d1ebfba4de63f1242537a62a32"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ed69d299b9d7872f911f089e00cdd2ea6969d2c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/94601d83fc4811485ca6fb1d50bece589fe1c24d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf296d7b75bfd49dc519ad0406e89ddc5c3f02e3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e4a6883ad9b4686a5f4bd90ff55a44d7ab65bd3c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e80ee74206f260eb1282e7d1339ff146a4a410d0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: USB: serial: fix port tear down use-after-free", "id": "2555149", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555149"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nUSB: serial: fix port tear down use-after-free\nSome drivers for multiport devices access port driver data from\ncompletion handlers of shared URBs submitted at attach() or first open()\nand stopped at disconnect() or last close(), respectively.\nA simple NULL check before accessing the driver data makes sure that a\nport state container has at least been allocated, but a completion\nhandler can still race with port tear down.\nReorder the disconnect handling so that ports are not deregistered (and\ntheir driver data freed) until after all ports have been hung up and the\ndriver disconnect() callback has run so that all I/O has been stopped.", "A flaw was found in the Linux kernel's USB serial subsystem. This flaw may result in a Denial of Service (DoS) due to a use-after-free vulnerability. During multiport device disconnection, a race condition allows background completion handlers to access port driver data after it has already been freed. A local user or an attacker with physical access could exploit this timing issue during device teardown to trigger a system crash."], "name": "CVE-2026-98772", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98772\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98772\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98772.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d93148ab6988cad872e65d694c95e8944e1b626,60cc9379c3e650d1ebfba4de63f1242537a62a32)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d93148ab6988cad872e65d694c95e8944e1b626,5e8980a81af195c49084be5b4c031085b56c7443)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d93148ab6988cad872e65d694c95e8944e1b626,e80ee74206f260eb1282e7d1339ff146a4a410d0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2d93148ab6988cad872e65d694c95e8944e1b626,33c920f7c5952dfc42d1b8ea6efe16b1f0bb0c5b)"}}], "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": "2.6.30"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.30)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.56,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.10,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "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": "2026-10-18T22:30:13.854276+00:00", "updated": "2026-10-23T21:30:04.792621+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}