{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98388", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.346Z", "datePublished": "2026-10-14T13:25:52.117Z", "dateUpdated": "2026-10-19T09:18:39.224Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:18:39.224Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexec: do_close_on_exec() before taking exec_update_lock\n\ndo_close_on_exec() currently happens while holding the exec_update_lock,\nwhich is used in a lot of places that access process state to\nsynchronize access checks.\nI recently added another such use of exec_update_lock, causing a\nregression.\n\ndo_close_on_exec() can block waiting for a reply from a filesystem.\nThat means a hung filesystem can block codepaths that use\nexec_update_lock; and it also means that a FUSE filesystem which\nattempts to inspect the calling process can deadlock.\n\nTo avoid such problems, move do_close_on_exec() before the\nexec_update_lock is taken, but after the FD table has been copied if\nnecessary.\n\nI have looked through all the calls between the old and new position of\nthe do_close_on_exec() call; there seems to be no file descriptor table\naccess in between."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/exec.c"], "versions": [{"version": "ae1e630bcaac739f625822078edbaea98366930d", "lessThan": "955973fff4a36d39a848b00cac1706863f568fe1", "status": "affected", "versionType": "git"}, {"version": "d54f14655fd7d7b293698a8b6918563c4c0465e7", "lessThan": "550feab5b01000ab314868b62211fb3ddfd600e8", "status": "affected", "versionType": "git"}, {"version": "bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9", "lessThan": "5aacc19ba2b1faf84c4a2f2cf9a1784e03d1ff38", "status": "affected", "versionType": "git"}, {"version": "7456ae990a9738962b33146916fabca62ae3d4e0", "lessThan": "3feb4020bfb7ccf0d347f27051639d25e19cd65d", "status": "affected", "versionType": "git"}, {"version": "4bfe8c481846cee52473a2f7d7b30ee8e6749fc4", "lessThan": "0d86cd6b709c39216e6ee5ea8f0fc4242bbb2b53", "status": "affected", "versionType": "git"}, {"version": "f9b4b03ccc9c69bf7f7298d4559906ebea7143b3", "lessThan": "19ddef61ee0a49782a60f8f497e50597ad5de2da", "status": "affected", "versionType": "git"}, {"version": "6650527444dadc63d84aa939d14ecba4fadb2f69", "lessThan": "63be3d8511bdafa095cd14a393cbf3c58dbbb928", "status": "affected", "versionType": "git"}, {"version": "6650527444dadc63d84aa939d14ecba4fadb2f69", "lessThan": "e780259b54e618ceb4763fbc21314acf3565e813", "status": "affected", "versionType": "git"}, {"version": "c1cfd63326f5d09999134e9052c353faf738286e", "status": "affected", "versionType": "git"}, {"version": "5.10.261", "lessThan": "5.10.271", "status": "affected", "versionType": "semver"}, {"version": "5.15.212", "lessThan": "5.15.222", "status": "affected", "versionType": "semver"}, {"version": "6.1.178", "lessThan": "6.1.189", "status": "affected", "versionType": "semver"}, {"version": "6.6.145", "lessThan": "6.6.158", "status": "affected", "versionType": "semver"}, {"version": "6.12.97", "lessThan": "6.12.111", "status": "affected", "versionType": "semver"}, {"version": "6.18.40", "lessThan": "6.18.53", "status": "affected", "versionType": "semver"}, {"version": "7.1.4", "lessThan": "7.2", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/exec.c"], "versions": [{"version": "7.2", "status": "affected"}, {"version": "0", "lessThan": "7.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.7", "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": "5.10.261", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.212", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.178", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.145", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.97", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.40", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.2", "versionEndExcluding": "7.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.2", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1.4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/955973fff4a36d39a848b00cac1706863f568fe1"}, {"url": "https://git.kernel.org/stable/c/550feab5b01000ab314868b62211fb3ddfd600e8"}, {"url": "https://git.kernel.org/stable/c/5aacc19ba2b1faf84c4a2f2cf9a1784e03d1ff38"}, {"url": "https://git.kernel.org/stable/c/3feb4020bfb7ccf0d347f27051639d25e19cd65d"}, {"url": "https://git.kernel.org/stable/c/0d86cd6b709c39216e6ee5ea8f0fc4242bbb2b53"}, {"url": "https://git.kernel.org/stable/c/19ddef61ee0a49782a60f8f497e50597ad5de2da"}, {"url": "https://git.kernel.org/stable/c/63be3d8511bdafa095cd14a393cbf3c58dbbb928"}, {"url": "https://git.kernel.org/stable/c/e780259b54e618ceb4763fbc21314acf3565e813"}], "title": "exec: do_close_on_exec() before taking exec_update_lock", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/exec.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "955973fff4a36d39a848b00cac1706863f568fe1", "status": "affected", "version": "ae1e630bcaac739f625822078edbaea98366930d", "versionType": "git"}, {"lessThan": "550feab5b01000ab314868b62211fb3ddfd600e8", "status": "affected", "version": "d54f14655fd7d7b293698a8b6918563c4c0465e7", "versionType": "git"}, {"lessThan": "5aacc19ba2b1faf84c4a2f2cf9a1784e03d1ff38", "status": "affected", "version": "bb43679356f1f2a4c6b1c88aec4f021e5b5c74e9", "versionType": "git"}, {"lessThan": "3feb4020bfb7ccf0d347f27051639d25e19cd65d", "status": "affected", "version": "7456ae990a9738962b33146916fabca62ae3d4e0", "versionType": "git"}, {"lessThan": "0d86cd6b709c39216e6ee5ea8f0fc4242bbb2b53", "status": "affected", "version": "4bfe8c481846cee52473a2f7d7b30ee8e6749fc4", "versionType": "git"}, {"lessThan": "19ddef61ee0a49782a60f8f497e50597ad5de2da", "status": "affected", "version": "f9b4b03ccc9c69bf7f7298d4559906ebea7143b3", "versionType": "git"}, {"lessThan": "63be3d8511bdafa095cd14a393cbf3c58dbbb928", "status": "affected", "version": "6650527444dadc63d84aa939d14ecba4fadb2f69", "versionType": "git"}, {"lessThan": "e780259b54e618ceb4763fbc21314acf3565e813", "status": "affected", "version": "6650527444dadc63d84aa939d14ecba4fadb2f69", "versionType": "git"}, {"status": "affected", "version": "c1cfd63326f5d09999134e9052c353faf738286e", "versionType": "git"}, {"lessThan": "5.10.271", "status": "affected", "version": "5.10.261", "versionType": "semver"}, {"lessThan": "5.15.222", "status": "affected", "version": "5.15.212", "versionType": "semver"}, {"lessThan": "6.1.189", "status": "affected", "version": "6.1.178", "versionType": "semver"}, {"lessThan": "6.6.158", "status": "affected", "version": "6.6.145", "versionType": "semver"}, {"lessThan": "6.12.111", "status": "affected", "version": "6.12.97", "versionType": "semver"}, {"lessThan": "6.18.53", "status": "affected", "version": "6.18.40", "versionType": "semver"}, {"lessThan": "7.2", "status": "affected", "version": "7.1.4", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/exec.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.2"}, {"lessThan": "7.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.7", "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\nexec: do_close_on_exec() before taking exec_update_lock\n\ndo_close_on_exec() currently happens while holding the exec_update_lock,\nwhich is used in a lot of places that access process state to\nsynchronize access checks.\nI recently added another such use of exec_update_lock, causing a\nregression.\n\ndo_close_on_exec() can block waiting for a reply from a filesystem.\nThat means a hung filesystem can block codepaths that use\nexec_update_lock; and it also means that a FUSE filesystem which\nattempts to inspect the calling process can deadlock.\n\nTo avoid such problems, move do_close_on_exec() before the\nexec_update_lock is taken, but after the FD table has been copied if\nnecessary.\n\nI have looked through all the calls between the old and new position of\nthe do_close_on_exec() call; there seems to be no file descriptor table\naccess in between."}], "id": "CVE-2026-98388", "lastModified": "2026-10-19T10:18:42.120", "metrics": {}, "published": "2026-10-14T14:17:49.617", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d86cd6b709c39216e6ee5ea8f0fc4242bbb2b53"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/19ddef61ee0a49782a60f8f497e50597ad5de2da"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3feb4020bfb7ccf0d347f27051639d25e19cd65d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/550feab5b01000ab314868b62211fb3ddfd600e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5aacc19ba2b1faf84c4a2f2cf9a1784e03d1ff38"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/63be3d8511bdafa095cd14a393cbf3c58dbbb928"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/955973fff4a36d39a848b00cac1706863f568fe1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e780259b54e618ceb4763fbc21314acf3565e813"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: exec: do_close_on_exec() before taking exec_update_lock", "id": "2552216", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2552216"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nexec: do_close_on_exec() before taking exec_update_lock\ndo_close_on_exec() currently happens while holding the exec_update_lock,\nwhich is used in a lot of places that access process state to\nsynchronize access checks.\nI recently added another such use of exec_update_lock, causing a\nregression.\ndo_close_on_exec() can block waiting for a reply from a filesystem.\nThat means a hung filesystem can block codepaths that use\nexec_update_lock; and it also means that a FUSE filesystem which\nattempts to inspect the calling process can deadlock.\nTo avoid such problems, move do_close_on_exec() before the\nexec_update_lock is taken, but after the FD table has been copied if\nnecessary.\nI have looked through all the calls between the old and new position of\nthe do_close_on_exec() call; there seems to be no file descriptor table\naccess in between.", "A flaw was found in the Linux kernel. During program execution, the kernel closes file descriptors marked for close-on-exec while holding an internal process state lock. If closing a file descriptor stalls on an unresponsive or user-space filesystem, the lock remains held and blocks related system operations. A local attacker can exploit this behavior to trigger a deadlock, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-98388", "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": "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98388\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98388\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98388.mbox"], "threat_severity": "Low"}