CVE-2026-98417

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98417", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.347Z", "datePublished": "2026-10-14T13:27:47.816Z", "dateUpdated": "2026-10-19T09:19:11.040Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:19:11.040Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: xfrm: reject unrepresentable espintcp transport headers\n\nESP-in-TCP can hand xfrm packets whose transport header offset no longer\nfits after the stream parser trims the TCP envelope. The plain transport\nheader reset truncates that offset and triggers the skb warning path.\n\nUse the careful transport-header helper and drop the skb through the\nexisting XFRM error path when the offset cannot be represented."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/xfrm/espintcp.c"], "versions": [{"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "d37a5b87577c4b4c1a1dcb000a9dff1df2cf886b", "status": "affected", "versionType": "git"}, {"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "6c29681207bc213188afa603dff2d55e7178a341", "status": "affected", "versionType": "git"}, {"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "4a8243fd2e21980fa3fd10c0610e9155057cebd3", "status": "affected", "versionType": "git"}, {"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "b2b84e73e0386ad0b4f9b8d3afde343e761f5275", "status": "affected", "versionType": "git"}, {"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "327b2a457dd7d5445f7395f371f3c65de79bd5ce", "status": "affected", "versionType": "git"}, {"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "cce630c751279e974fa0bb574d80575e0cc7e8f3", "status": "affected", "versionType": "git"}, {"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d", "status": "affected", "versionType": "git"}, {"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "lessThan": "96f01b53c2d05e003b040892256de54a586e8529", "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/xfrm/espintcp.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "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": "5.6", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d37a5b87577c4b4c1a1dcb000a9dff1df2cf886b"}, {"url": "https://git.kernel.org/stable/c/6c29681207bc213188afa603dff2d55e7178a341"}, {"url": "https://git.kernel.org/stable/c/4a8243fd2e21980fa3fd10c0610e9155057cebd3"}, {"url": "https://git.kernel.org/stable/c/b2b84e73e0386ad0b4f9b8d3afde343e761f5275"}, {"url": "https://git.kernel.org/stable/c/327b2a457dd7d5445f7395f371f3c65de79bd5ce"}, {"url": "https://git.kernel.org/stable/c/cce630c751279e974fa0bb574d80575e0cc7e8f3"}, {"url": "https://git.kernel.org/stable/c/206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d"}, {"url": "https://git.kernel.org/stable/c/96f01b53c2d05e003b040892256de54a586e8529"}], "title": "net: xfrm: reject unrepresentable espintcp transport headers", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/xfrm/espintcp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d37a5b87577c4b4c1a1dcb000a9dff1df2cf886b", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}, {"lessThan": "6c29681207bc213188afa603dff2d55e7178a341", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}, {"lessThan": "4a8243fd2e21980fa3fd10c0610e9155057cebd3", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}, {"lessThan": "b2b84e73e0386ad0b4f9b8d3afde343e761f5275", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}, {"lessThan": "327b2a457dd7d5445f7395f371f3c65de79bd5ce", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}, {"lessThan": "cce630c751279e974fa0bb574d80575e0cc7e8f3", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}, {"lessThan": "206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}, {"lessThan": "96f01b53c2d05e003b040892256de54a586e8529", "status": "affected", "version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/xfrm/espintcp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.6"}, {"lessThan": "5.6", "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\nnet: xfrm: reject unrepresentable espintcp transport headers\n\nESP-in-TCP can hand xfrm packets whose transport header offset no longer\nfits after the stream parser trims the TCP envelope. The plain transport\nheader reset truncates that offset and triggers the skb warning path.\n\nUse the careful transport-header helper and drop the skb through the\nexisting XFRM error path when the offset cannot be represented."}], "id": "CVE-2026-98417", "lastModified": "2026-10-19T10:18:47.100", "metrics": {}, "published": "2026-10-14T14:17:53.040", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/327b2a457dd7d5445f7395f371f3c65de79bd5ce"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4a8243fd2e21980fa3fd10c0610e9155057cebd3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6c29681207bc213188afa603dff2d55e7178a341"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/96f01b53c2d05e003b040892256de54a586e8529"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b2b84e73e0386ad0b4f9b8d3afde343e761f5275"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cce630c751279e974fa0bb574d80575e0cc7e8f3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d37a5b87577c4b4c1a1dcb000a9dff1df2cf886b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: xfrm: reject unrepresentable espintcp transport headers", "id": "2552211", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2552211"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-681", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: xfrm: reject unrepresentable espintcp transport headers\nESP-in-TCP can hand xfrm packets whose transport header offset no longer\nfits after the stream parser trims the TCP envelope. The plain transport\nheader reset truncates that offset and triggers the skb warning path.\nUse the careful transport-header helper and drop the skb through the\nexisting XFRM error path when the offset cannot be represented.", "A flaw was found in the Linux kernel's XFRM (IPsec encryption framework) subsystem. A remote attacker could exploit this issue by sending specially crafted ESP-in-TCP (Encapsulating Security Payload over Transmission Control Protocol) packets with invalid transport header offsets. This improper handling triggers kernel warning paths and packet processing errors, potentially resulting in a Denial of Service (DoS)."], "name": "CVE-2026-98417", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "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-2026-98417\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98417\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98417.mbox"], "threat_severity": "Important"}

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