CVE-2026-98495

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98495", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.353Z", "datePublished": "2026-10-18T15:16:24.810Z", "dateUpdated": "2026-10-19T09:20:32.370Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:20:32.370Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: arp: terminate device name before lookup\n\nThe ARP ioctl copies a user-provided struct arpreq into a stack object. Its\narp_dev field may contain IFNAMSIZ bytes without a NUL terminator.\n\nSuch input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where\nstrcmp() can read past the end of the stack object when a matching\nalternative interface name exists.\n\nTerminate the field before the lookup to prevent the out-of-bounds read."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv4/arp.c"], "versions": [{"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "ae6d704dbf9542b0a0830ec91a2db4f30307e7d8", "status": "affected", "versionType": "git"}, {"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "47107491b48ceef0a2faa7a010cfa961f211ef9f", "status": "affected", "versionType": "git"}, {"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "7389757d88f54237951d7497d9c4dae7cc6d64be", "status": "affected", "versionType": "git"}, {"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b", "status": "affected", "versionType": "git"}, {"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "414bbad9928598904313299ac9e037a73f520be1", "status": "affected", "versionType": "git"}, {"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "ba664d83638640cf454b65167339cbf20dfd6f10", "status": "affected", "versionType": "git"}, {"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "35e716a70733472ede300540082d64c33bf3b4c9", "status": "affected", "versionType": "git"}, {"version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "lessThan": "d8b6529e80bcb4fb8177121404cbb3377acaebd2", "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/ipv4/arp.c"], "versions": [{"version": "5.5", "status": "affected"}, {"version": "0", "lessThan": "5.5", "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": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": 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{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/ipv4/arp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ae6d704dbf9542b0a0830ec91a2db4f30307e7d8", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}, {"lessThan": "47107491b48ceef0a2faa7a010cfa961f211ef9f", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}, {"lessThan": "7389757d88f54237951d7497d9c4dae7cc6d64be", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}, {"lessThan": "1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}, {"lessThan": "414bbad9928598904313299ac9e037a73f520be1", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}, {"lessThan": "ba664d83638640cf454b65167339cbf20dfd6f10", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}, {"lessThan": "35e716a70733472ede300540082d64c33bf3b4c9", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}, {"lessThan": "d8b6529e80bcb4fb8177121404cbb3377acaebd2", "status": "affected", "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/ipv4/arp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.5"}, {"lessThan": "5.5", "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": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "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\nnet: arp: terminate device name before lookup\n\nThe ARP ioctl copies a user-provided struct arpreq into a stack object. Its\narp_dev field may contain IFNAMSIZ bytes without a NUL terminator.\n\nSuch input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where\nstrcmp() can read past the end of the stack object when a matching\nalternative interface name exists.\n\nTerminate the field before the lookup to prevent the out-of-bounds read."}], "id": "CVE-2026-98495", "lastModified": "2026-10-19T10:19:01.867", "metrics": {}, "published": "2026-10-18T16:17:00.483", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/35e716a70733472ede300540082d64c33bf3b4c9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/414bbad9928598904313299ac9e037a73f520be1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/47107491b48ceef0a2faa7a010cfa961f211ef9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7389757d88f54237951d7497d9c4dae7cc6d64be"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ae6d704dbf9542b0a0830ec91a2db4f30307e7d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba664d83638640cf454b65167339cbf20dfd6f10"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d8b6529e80bcb4fb8177121404cbb3377acaebd2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: arp: terminate device name before lookup", "id": "2554863", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554863"}, "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-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: arp: terminate device name before lookup\nThe ARP ioctl copies a user-provided struct arpreq into a stack object. Its\narp_dev field may contain IFNAMSIZ bytes without a NUL terminator.\nSuch input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where\nstrcmp() can read past the end of the stack object when a matching\nalternative interface name exists.\nTerminate the field before the lookup to prevent the out-of-bounds read.", "A flaw was found in the Linux kernel. A local user can trigger a Denial of Service (DoS) or potentially expose sensitive memory due to an out-of-bounds read flaw in the Address Resolution Protocol (ARP) networking interface. By supplying a network device request containing a device name that lacks proper null termination, the kernel can read past the end of allocated stack memory during interface name lookups. This issue can cause a system crash or lead to unintended information disclosure."], "name": "CVE-2026-98495", "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": "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": "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-2026-98495\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98495\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98495.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,ae6d704dbf9542b0a0830ec91a2db4f30307e7d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,47107491b48ceef0a2faa7a010cfa961f211ef9f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,7389757d88f54237951d7497d9c4dae7cc6d64be)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,414bbad9928598904313299ac9e037a73f520be1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,ba664d83638640cf454b65167339cbf20dfd6f10)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,35e716a70733472ede300540082d64c33bf3b4c9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc,d8b6529e80bcb4fb8177121404cbb3377acaebd2)"}}], "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": "5.5"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.5)"}}, {"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": "[6.18.55,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.9,7.3.0)"}}, {"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": "2026-10-18T17:45:06.375193+00:00", "updated": "2026-10-22T22:45:13.862728+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-119", "CWE-20", "CWE-125"]}