{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53238", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.393Z", "datePublished": "2026-06-25T08:39:34.492Z", "dateUpdated": "2026-06-25T08:39:34.492Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:39:34.492Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlabel: validate unlabeled address and mask attribute lengths\n\nnetlbl_unlabel_addrinfo_get() used the address attribute length to\ndetermine whether the attribute data could be read as an IPv4 or IPv6\naddress, but did not independently validate the corresponding mask\nattribute length. A crafted Generic Netlink request could therefore\nprovide a valid IPv4/IPv6 address attribute with a shorter mask\nattribute, which would later be read as a full struct in_addr or\nstruct in6_addr.\n\nNLA_BINARY policy lengths are maximum lengths by default, so use\nNLA_POLICY_EXACT_LEN() for the unlabeled IPv4/IPv6 address and mask\nattributes. This rejects short attributes during policy validation and\nalso exposes the exact length requirements through policy introspection."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netlabel/netlabel_unlabeled.c"], "versions": [{"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "975a84fd741440853380d37465b6e226cf47254c", "status": "affected", "versionType": "git"}, {"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "672f0f3b8f875ffe6525a37847eafa7648c4c0c6", "status": "affected", "versionType": "git"}, {"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "95bda3eac0b1454c2cee98d58d9ba6dd8391e843", "status": "affected", "versionType": "git"}, {"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6", "status": "affected", "versionType": "git"}, {"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "71c52da13c3737493b42d20d9f33de34e03b3156", "status": "affected", "versionType": "git"}, {"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8", "status": "affected", "versionType": "git"}, {"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "ccfe292a966079c61ea68a2da303b2a336170993", "status": "affected", "versionType": "git"}, {"version": "8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd", "lessThan": "9772589b57e44aedc240211c5c3f7a684a034d3a", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netlabel/netlabel_unlabeled.c"], "versions": [{"version": "2.6.25", "status": "affected"}, {"version": "0", "lessThan": "2.6.25", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.259", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "2.6.25", "versionEndExcluding": "5.10.259"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.25", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/975a84fd741440853380d37465b6e226cf47254c"}, {"url": "https://git.kernel.org/stable/c/672f0f3b8f875ffe6525a37847eafa7648c4c0c6"}, {"url": "https://git.kernel.org/stable/c/95bda3eac0b1454c2cee98d58d9ba6dd8391e843"}, {"url": "https://git.kernel.org/stable/c/07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6"}, {"url": "https://git.kernel.org/stable/c/71c52da13c3737493b42d20d9f33de34e03b3156"}, {"url": "https://git.kernel.org/stable/c/0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8"}, {"url": "https://git.kernel.org/stable/c/ccfe292a966079c61ea68a2da303b2a336170993"}, {"url": "https://git.kernel.org/stable/c/9772589b57e44aedc240211c5c3f7a684a034d3a"}], "title": "netlabel: validate unlabeled address and mask attribute lengths", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: netlabel: validate unlabeled address and mask attribute lengths", "id": "2492828", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492828"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetlabel: validate unlabeled address and mask attribute lengths\nnetlbl_unlabel_addrinfo_get() used the address attribute length to\ndetermine whether the attribute data could be read as an IPv4 or IPv6\naddress, but did not independently validate the corresponding mask\nattribute length. A crafted Generic Netlink request could therefore\nprovide a valid IPv4/IPv6 address attribute with a shorter mask\nattribute, which would later be read as a full struct in_addr or\nstruct in6_addr.\nNLA_BINARY policy lengths are maximum lengths by default, so use\nNLA_POLICY_EXACT_LEN() for the unlabeled IPv4/IPv6 address and mask\nattributes. This rejects short attributes during policy validation and\nalso exposes the exact length requirements through policy introspection."], "name": "CVE-2026-53238", "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"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53238\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53238\nhttps://lore.kernel.org/linux-cve-announce/2026062510-CVE-2026-53238-06fb@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,975a84fd741440853380d37465b6e226cf47254c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,672f0f3b8f875ffe6525a37847eafa7648c4c0c6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,95bda3eac0b1454c2cee98d58d9ba6dd8391e843)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,07a18f5c90dd3d586b73242f5a5bbf0a72f2fdc6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,71c52da13c3737493b42d20d9f33de34e03b3156)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,0c4bb32ad7fdc2dc6a8050f41eb04d4bda56b6c8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,ccfe292a966079c61ea68a2da303b2a336170993)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[8cc44579d1bd77ba3a32f2cb76fd9669c229c5fd,9772589b57e44aedc240211c5c3f7a684a034d3a)"}}], "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": "2.6.25"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.25)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.259,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "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": "2026-06-25T13:45:02.984258+00:00", "updated": "2026-06-30T01:30:05.095649+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-125", "CWE-129"]}