CVE-2026-98322

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98322", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.340Z", "datePublished": "2026-10-06T08:46:16.346Z", "dateUpdated": "2026-10-19T09:17:32.745Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:17:32.745Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_nat: fully initialise new_addr in netmap setup\n\nnft_nat_setup_netmap() builds the mapped address in an on-stack\nunion nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip\nmember and the loop runs a single 32-bit iteration, but it then copies\nthe whole 16-byte union into range->min_addr and range->max_addr, so the\nupper 12 bytes reach nf_nat_setup_info() uninitialised.\n\nKMSAN reports an uninit-value in nf_nat_setup_info() reached from\nnft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected.\n\nZero-initialise new_addr."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nft_nat.c"], "versions": [{"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "29365695842db0a97b701a43a09fad1b4f7ecf3e", "status": "affected", "versionType": "git"}, {"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "7b9380c38c2fd2189416fa602bdbc5c8523b84b2", "status": "affected", "versionType": "git"}, {"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "eb2030137dba3b59cbb5057a33af70488d6bc231", "status": "affected", "versionType": "git"}, {"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "e4982c489ee359162eee3ece1fb36082648464a5", "status": "affected", "versionType": "git"}, {"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "161f5860c92a8ec80b6bdff16e79d70dcd8afc5a", "status": "affected", "versionType": "git"}, {"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "0ce42c7b84032335abff9eac43762e4ca8224451", "status": "affected", "versionType": "git"}, {"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "1c43f5db482f74b41987c39c9c375a5e767556eb", "status": "affected", "versionType": "git"}, {"version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "lessThan": "d313499df66159b4b7971d760d16729598ab7e5a", "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/netfilter/nft_nat.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "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": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "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": "5.8", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/29365695842db0a97b701a43a09fad1b4f7ecf3e"}, {"url": "https://git.kernel.org/stable/c/7b9380c38c2fd2189416fa602bdbc5c8523b84b2"}, {"url": "https://git.kernel.org/stable/c/eb2030137dba3b59cbb5057a33af70488d6bc231"}, {"url": "https://git.kernel.org/stable/c/e4982c489ee359162eee3ece1fb36082648464a5"}, {"url": "https://git.kernel.org/stable/c/161f5860c92a8ec80b6bdff16e79d70dcd8afc5a"}, {"url": "https://git.kernel.org/stable/c/0ce42c7b84032335abff9eac43762e4ca8224451"}, {"url": "https://git.kernel.org/stable/c/1c43f5db482f74b41987c39c9c375a5e767556eb"}, {"url": "https://git.kernel.org/stable/c/d313499df66159b4b7971d760d16729598ab7e5a"}], "title": "netfilter: nft_nat: fully initialise new_addr in netmap setup", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/netfilter/nft_nat.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "29365695842db0a97b701a43a09fad1b4f7ecf3e", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}, {"lessThan": "7b9380c38c2fd2189416fa602bdbc5c8523b84b2", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}, {"lessThan": "eb2030137dba3b59cbb5057a33af70488d6bc231", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}, {"lessThan": "e4982c489ee359162eee3ece1fb36082648464a5", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}, {"lessThan": "161f5860c92a8ec80b6bdff16e79d70dcd8afc5a", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}, {"lessThan": "0ce42c7b84032335abff9eac43762e4ca8224451", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}, {"lessThan": "1c43f5db482f74b41987c39c9c375a5e767556eb", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}, {"lessThan": "d313499df66159b4b7971d760d16729598ab7e5a", "status": "affected", "version": "3ff7ddb1353da9b535e65702704cbadea1da9a00", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/netfilter/nft_nat.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "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": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "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\nnetfilter: nft_nat: fully initialise new_addr in netmap setup\n\nnft_nat_setup_netmap() builds the mapped address in an on-stack\nunion nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip\nmember and the loop runs a single 32-bit iteration, but it then copies\nthe whole 16-byte union into range->min_addr and range->max_addr, so the\nupper 12 bytes reach nf_nat_setup_info() uninitialised.\n\nKMSAN reports an uninit-value in nf_nat_setup_info() reached from\nnft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected.\n\nZero-initialise new_addr."}], "id": "CVE-2026-98322", "lastModified": "2026-10-19T10:18:34.350", "metrics": {}, "published": "2026-10-06T09:18:24.243", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0ce42c7b84032335abff9eac43762e4ca8224451"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/161f5860c92a8ec80b6bdff16e79d70dcd8afc5a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1c43f5db482f74b41987c39c9c375a5e767556eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/29365695842db0a97b701a43a09fad1b4f7ecf3e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7b9380c38c2fd2189416fa602bdbc5c8523b84b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d313499df66159b4b7971d760d16729598ab7e5a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e4982c489ee359162eee3ece1fb36082648464a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb2030137dba3b59cbb5057a33af70488d6bc231"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: netfilter: nft_nat: fully initialise new_addr in netmap setup", "id": "2546362", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546362"}, "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-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nft_nat: fully initialise new_addr in netmap setup\nnft_nat_setup_netmap() builds the mapped address in an on-stack\nunion nf_inet_addr. For an IPv4 mapping it writes only the 4-byte .ip\nmember and the loop runs a single 32-bit iteration, but it then copies\nthe whole 16-byte union into range->min_addr and range->max_addr, so the\nupper 12 bytes reach nf_nat_setup_info() uninitialised.\nKMSAN reports an uninit-value in nf_nat_setup_info() reached from\nnft_nat_eval(). The IPv6 path fills all 16 bytes and is not affected.\nZero-initialise new_addr.", "A flaw was found in the Linux kernel's Netfilter network filtering subsystem. When configuring IPv4 Network Address Translation (NAT) rules with the netmap feature, the system fails to initialize a temporary memory buffer on the stack. As a result, uninitialized kernel stack data is copied and processed during packet evaluation. A local user with network administration privileges can exploit this flaw to cause unexpected system behavior, leading to a Denial of Service (DoS) or the potential disclosure of sensitive kernel memory."], "name": "CVE-2026-98322", "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": "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": "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": "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": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98322\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98322\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98322.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,29365695842db0a97b701a43a09fad1b4f7ecf3e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,7b9380c38c2fd2189416fa602bdbc5c8523b84b2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,eb2030137dba3b59cbb5057a33af70488d6bc231)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,e4982c489ee359162eee3ece1fb36082648464a5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,161f5860c92a8ec80b6bdff16e79d70dcd8afc5a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,0ce42c7b84032335abff9eac43762e4ca8224451)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,1c43f5db482f74b41987c39c9c375a5e767556eb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[3ff7ddb1353da9b535e65702704cbadea1da9a00,d313499df66159b4b7971d760d16729598ab7e5a)"}}], "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": "5.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.271,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.222,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.189,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.158,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.54,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.8,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "7.3-rc4"}}], "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": "2026-10-06T14:30:07.738342+00:00", "updated": "2026-10-11T05:30:17.274424+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}