CVE-2026-98752

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98752", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.368Z", "datePublished": "2026-10-18T15:47:36.877Z", "dateUpdated": "2026-10-30T12:39:22.635Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:39:22.635Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: port: fix tty_port_tty_vhangup() race\n\nDrivers rely on tty_port_tty_vhangup() to synchronously hang up their\nports before tearing down resources as part of deregistration (e.g. on\nphysical disconnect).\n\nIf tty_port_tty_vhangup() races with another hangup it may however\nreturn before the port has been shut down. This is in turn can lead to\nuse-after-free and NULL-pointer dereferences in racing ioctls (including\na synchronous hangup) and in processing of racing asynchronous hangups\n(carrier loss).\n\nAdd the missing serialisation to tty_port_tty_vhangup() and\ntty_port_hangup() so that the former does not return until the port has\nbeen shut down also when there is a racing hangup.\n\nNote that serial core does not use tty_port_hangup(), but it already\nholds the port mutex when clearing port->tty and shutting down the port\nin uart_hangup()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tty/tty_port.c", "include/linux/tty_port.h"], "versions": [{"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "a78910f6d78cc1415cbc9b4fb621c3f4f6945be2", "status": "affected", "versionType": "git"}, {"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "2e16ae1464a4f435425c6f6ff1e293db850a624c", "status": "affected", "versionType": "git"}, {"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "a776d603d1e1bba2837295817b0a39394707b10d", "status": "affected", "versionType": "git"}, {"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "ce220b4cdf62f73db0c1940f968eb33b9899fdd0", "status": "affected", "versionType": "git"}, {"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "6d1a984afc3ca477dab3e51ec806671d443ad524", "status": "affected", "versionType": "git"}, {"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "6b7be3b9b857947e9c1338d4919d4ebd3b75e907", "status": "affected", "versionType": "git"}, {"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "017b18addbe8dcace1a569a00d40ed1ba1e03f4c", "status": "affected", "versionType": "git"}, {"version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "lessThan": "b48820de8c1a596c5b99775524dfce73c6576c5d", "status": "affected", "versionType": "git"}, {"version": "4260dc792fabfd20c8644fa9414b2ae48372365f", "status": "affected", "versionType": "git"}, {"version": "2.6.31.2", "lessThan": "2.6.32", "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/tty/tty_port.c", "include/linux/tty_port.h"], "versions": [{"version": "2.6.32", "status": "affected"}, {"version": "0", "lessThan": "2.6.32", "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": "2.6.32", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.18.56"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.2.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a78910f6d78cc1415cbc9b4fb621c3f4f6945be2"}, {"url": "https://git.kernel.org/stable/c/2e16ae1464a4f435425c6f6ff1e293db850a624c"}, {"url": "https://git.kernel.org/stable/c/a776d603d1e1bba2837295817b0a39394707b10d"}, {"url": "https://git.kernel.org/stable/c/ce220b4cdf62f73db0c1940f968eb33b9899fdd0"}, {"url": "https://git.kernel.org/stable/c/6d1a984afc3ca477dab3e51ec806671d443ad524"}, {"url": "https://git.kernel.org/stable/c/6b7be3b9b857947e9c1338d4919d4ebd3b75e907"}, {"url": "https://git.kernel.org/stable/c/017b18addbe8dcace1a569a00d40ed1ba1e03f4c"}, {"url": "https://git.kernel.org/stable/c/b48820de8c1a596c5b99775524dfce73c6576c5d"}], "title": "tty: port: fix tty_port_tty_vhangup() race", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/tty/tty_port.c", "include/linux/tty_port.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a78910f6d78cc1415cbc9b4fb621c3f4f6945be2", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"lessThan": "2e16ae1464a4f435425c6f6ff1e293db850a624c", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"lessThan": "a776d603d1e1bba2837295817b0a39394707b10d", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"lessThan": "ce220b4cdf62f73db0c1940f968eb33b9899fdd0", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"lessThan": "6d1a984afc3ca477dab3e51ec806671d443ad524", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"lessThan": "6b7be3b9b857947e9c1338d4919d4ebd3b75e907", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"lessThan": "017b18addbe8dcace1a569a00d40ed1ba1e03f4c", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"lessThan": "b48820de8c1a596c5b99775524dfce73c6576c5d", "status": "affected", "version": "7ca0ff9ab3218ec443a7a9ad247e4650373ed41e", "versionType": "git"}, {"status": "affected", "version": "4260dc792fabfd20c8644fa9414b2ae48372365f", "versionType": "git"}, {"lessThan": "2.6.32", "status": "affected", "version": "2.6.31.2", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/tty/tty_port.c", "include/linux/tty_port.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.32"}, {"lessThan": "2.6.32", "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\ntty: port: fix tty_port_tty_vhangup() race\n\nDrivers rely on tty_port_tty_vhangup() to synchronously hang up their\nports before tearing down resources as part of deregistration (e.g. on\nphysical disconnect).\n\nIf tty_port_tty_vhangup() races with another hangup it may however\nreturn before the port has been shut down. This is in turn can lead to\nuse-after-free and NULL-pointer dereferences in racing ioctls (including\na synchronous hangup) and in processing of racing asynchronous hangups\n(carrier loss).\n\nAdd the missing serialisation to tty_port_tty_vhangup() and\ntty_port_hangup() so that the former does not return until the port has\nbeen shut down also when there is a racing hangup.\n\nNote that serial core does not use tty_port_hangup(), but it already\nholds the port mutex when clearing port->tty and shutting down the port\nin uart_hangup()."}], "id": "CVE-2026-98752", "lastModified": "2026-10-30T13:21:24.107", "metrics": {}, "published": "2026-10-18T16:17:28.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/017b18addbe8dcace1a569a00d40ed1ba1e03f4c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e16ae1464a4f435425c6f6ff1e293db850a624c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6b7be3b9b857947e9c1338d4919d4ebd3b75e907"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d1a984afc3ca477dab3e51ec806671d443ad524"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a776d603d1e1bba2837295817b0a39394707b10d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a78910f6d78cc1415cbc9b4fb621c3f4f6945be2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b48820de8c1a596c5b99775524dfce73c6576c5d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ce220b4cdf62f73db0c1940f968eb33b9899fdd0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: tty: port: fix tty_port_tty_vhangup() race", "id": "2555122", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555122"}, "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-366", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntty: port: fix tty_port_tty_vhangup() race\nDrivers rely on tty_port_tty_vhangup() to synchronously hang up their\nports before tearing down resources as part of deregistration (e.g. on\nphysical disconnect).\nIf tty_port_tty_vhangup() races with another hangup it may however\nreturn before the port has been shut down. This is in turn can lead to\nuse-after-free and NULL-pointer dereferences in racing ioctls (including\na synchronous hangup) and in processing of racing asynchronous hangups\n(carrier loss).\nAdd the missing serialisation to tty_port_tty_vhangup() and\ntty_port_hangup() so that the former does not return until the port has\nbeen shut down also when there is a racing hangup.\nNote that serial core does not use tty_port_hangup(), but it already\nholds the port mutex when clearing port->tty and shutting down the port\nin uart_hangup().", "A flaw was found in the Linux kernel's TTY (terminal) subsystem. This vulnerability allows a local user to cause a Denial of Service (DoS) or potentially execute arbitrary code. A race condition during port disconnect and hangup routines allows the kernel to release resources while they are still being accessed, resulting in memory corruption and system crashes."], "name": "CVE-2026-98752", "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": "Not affected", "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-2026-98752\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98752\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98752.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ca0ff9ab3218ec443a7a9ad247e4650373ed41e,6d1a984afc3ca477dab3e51ec806671d443ad524)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ca0ff9ab3218ec443a7a9ad247e4650373ed41e,6b7be3b9b857947e9c1338d4919d4ebd3b75e907)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ca0ff9ab3218ec443a7a9ad247e4650373ed41e,017b18addbe8dcace1a569a00d40ed1ba1e03f4c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7ca0ff9ab3218ec443a7a9ad247e4650373ed41e,b48820de8c1a596c5b99775524dfce73c6576c5d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "4260dc792fabfd20c8644fa9414b2ae48372365f"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.6.31.2,2.6.32)"}}], "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": "2.6.32"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,2.6.32)"}}, {"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": "2026-10-18T22:15:14.434480+00:00", "updated": "2026-10-23T23:30:17.666041+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}