CVE-2026-72219

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The nlm_do_fopen() failure path jumps\nto out_unlock, which releases nlm_file_mutex and returns without\nfreeing the allocation, so each failure leaks one nlm_file.\n\nRoute the failure through out_free so kfree() runs before the\nfunction returns."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/lockd/svcsubs.c"], "versions": [{"version": "e580323ac0b51ad10ec2e181d1f777479b7983e7", "lessThan": "bca74fff138429f3d5802865f38fc883d53a4f1a", "status": "affected", "versionType": "git"}, {"version": "7f024fcd5c97dc70bb9121c80407cf3cf9be7159", "lessThan": "d7c677feb3aa1f42b1026d75a8ea61338b51e4fb", "status": "affected", "versionType": "git"}, {"version": "7f024fcd5c97dc70bb9121c80407cf3cf9be7159", "lessThan": "39f59bf67231ed2eb0cdf6337194360e964b609a", "status": "affected", "versionType": "git"}, {"version": "7f024fcd5c97dc70bb9121c80407cf3cf9be7159", 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After kzalloc_obj()\nsucceeds in nlm_lookup_file(), the freshly allocated nlm_file is not\nyet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps\nto out_unlock, which releases nlm_file_mutex and returns without\nfreeing the allocation, so each failure leaks one nlm_file.\n\nRoute the failure through out_free so kfree() runs before the\nfunction returns."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.261", "versionStartIncluding": "5.10.220"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.97", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.40", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "5.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "5.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:10:34.296Z"}}}, "cveMetadata": {"cveId": "CVE-2026-72219", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:55:22.494Z", "dateReserved": "2026-08-09T03:40:39.913Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:54:13.067Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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After kzalloc_obj()\nsucceeds in nlm_lookup_file(), the freshly allocated nlm_file is not\nyet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps\nto out_unlock, which releases nlm_file_mutex and returns without\nfreeing the allocation, so each failure leaks one nlm_file.\n\nRoute the failure through out_free so kfree() runs before the\nfunction returns."}], "id": "CVE-2026-72219", "lastModified": "2026-11-06T17:19:39.873", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72219", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:52:50.352444Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:21:40.747", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1161c4b5bd0048c8148e919f818a33cff3623ef0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1403f1221a35a6caf959bb7bf005741f17263c66"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/39f59bf67231ed2eb0cdf6337194360e964b609a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bca74fff138429f3d5802865f38fc883d53a4f1a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d7c677feb3aa1f42b1026d75a8ea61338b51e4fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ddfbd816273b4e9c9b836f5b8773664c6f40f807"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f16a1513452edb532fec81e591c64c320866719c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: lockd: Plug nlm_file leak when nlm_do_fopen() fails", "id": "2516736", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516736"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in the Linux kernel's lockd component. A remote attacker can repeatedly trigger failures in the `nlm_do_fopen()` function by providing specially crafted file handles that the system rejects. This vulnerability causes a memory leak, where each failed operation consumes system memory without releasing it. Over time, this can lead to resource exhaustion and a Denial of Service (DoS) condition for the affected system."], "name": "CVE-2026-72219", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72219\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72219\nhttps://lore.kernel.org/linux-cve-announce/2026081547-CVE-2026-72219-5de7@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e580323ac0b51ad10ec2e181d1f777479b7983e7,bca74fff138429f3d5802865f38fc883d53a4f1a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f024fcd5c97dc70bb9121c80407cf3cf9be7159,d7c677feb3aa1f42b1026d75a8ea61338b51e4fb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f024fcd5c97dc70bb9121c80407cf3cf9be7159,39f59bf67231ed2eb0cdf6337194360e964b609a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f024fcd5c97dc70bb9121c80407cf3cf9be7159,ddfbd816273b4e9c9b836f5b8773664c6f40f807)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f024fcd5c97dc70bb9121c80407cf3cf9be7159,1403f1221a35a6caf959bb7bf005741f17263c66)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f024fcd5c97dc70bb9121c80407cf3cf9be7159,1161c4b5bd0048c8148e919f818a33cff3623ef0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f024fcd5c97dc70bb9121c80407cf3cf9be7159,3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7f024fcd5c97dc70bb9121c80407cf3cf9be7159,f16a1513452edb532fec81e591c64c320866719c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.10.220,5.10.261)"}}], "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": "generic", "value": "5.15"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.261,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.212,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.178,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.145,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.97,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.40,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.5,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "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": "2026-08-15T18:00:11.053923+00:00", "updated": "2026-08-22T09:30:17.181579+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}