CVE-2026-98237

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98237", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.329Z", "datePublished": "2026-10-06T08:45:09.277Z", "dateUpdated": "2026-10-19T09:16:08.988Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:16:08.988Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain\n\nThe NDP traversal in mhi_mbim_rx() only stops when wNextNdpIndex is\nzero. Nothing requires the offsets to advance, so a modem that\npoints an NDP at itself, or at an earlier NDP, keeps the loop\nspinning forever on one CPU.\n\nBreak out when the next NDP offset is not larger than the current\none.\n\n\nVerified in a QEMU guest with a fault injector feeding the driver's\nreceive callback an NTB whose single NDP points at itself: the\nunpatched driver spins in mhi_mbim_rx() with one CPU pinned at 100%\nand the thread never returns. With this check the loop terminates\nwithin one iteration.\n\nChanges in v2: move the non-increasing check to the wNextNdpIndex\nretrieval site, as suggested by Loic Poulain, instead of tracking\nthe previous offset in a separate variable."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wwan/mhi_wwan_mbim.c"], "versions": [{"version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "lessThan": "3ed36ee1b29b028f6bc2ebe100152f61a33df05a", "status": "affected", "versionType": "git"}, {"version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "lessThan": "e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526", "status": "affected", "versionType": "git"}, {"version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "lessThan": "19b5e8dd884a530d04482e1a8e547f43cad17ed7", "status": "affected", "versionType": "git"}, {"version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "lessThan": "24ade82d6d993274e99c2c6998848751c35292e7", "status": "affected", "versionType": "git"}, {"version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "lessThan": "8dad70ff7e25cbcfbcb5101fdbf36d98003eb653", "status": "affected", "versionType": "git"}, {"version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "lessThan": "829fec45122da58d77a55a3b7ca514dafab98e77", "status": "affected", "versionType": "git"}, {"version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "lessThan": "5d063822ac5184939c1ed377a339a01d8ae814e8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wwan/mhi_wwan_mbim.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "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": "5.15", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3ed36ee1b29b028f6bc2ebe100152f61a33df05a"}, {"url": "https://git.kernel.org/stable/c/e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526"}, {"url": "https://git.kernel.org/stable/c/19b5e8dd884a530d04482e1a8e547f43cad17ed7"}, {"url": "https://git.kernel.org/stable/c/24ade82d6d993274e99c2c6998848751c35292e7"}, {"url": "https://git.kernel.org/stable/c/8dad70ff7e25cbcfbcb5101fdbf36d98003eb653"}, {"url": "https://git.kernel.org/stable/c/829fec45122da58d77a55a3b7ca514dafab98e77"}, {"url": "https://git.kernel.org/stable/c/5d063822ac5184939c1ed377a339a01d8ae814e8"}], "title": "net: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wwan/mhi_wwan_mbim.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3ed36ee1b29b028f6bc2ebe100152f61a33df05a", "status": "affected", "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "versionType": "git"}, {"lessThan": "e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526", "status": "affected", "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "versionType": "git"}, {"lessThan": "19b5e8dd884a530d04482e1a8e547f43cad17ed7", "status": "affected", "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "versionType": "git"}, {"lessThan": "24ade82d6d993274e99c2c6998848751c35292e7", "status": "affected", "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "versionType": "git"}, {"lessThan": "8dad70ff7e25cbcfbcb5101fdbf36d98003eb653", "status": "affected", "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "versionType": "git"}, {"lessThan": "829fec45122da58d77a55a3b7ca514dafab98e77", "status": "affected", "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "versionType": "git"}, {"lessThan": "5d063822ac5184939c1ed377a339a01d8ae814e8", "status": "affected", "version": "aa730a9905b7b079ef2fffdab7f15dbb842f5c7c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wwan/mhi_wwan_mbim.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"lessThan": "5.15", "status": "unaffected", "version": "0", "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: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain\n\nThe NDP traversal in mhi_mbim_rx() only stops when wNextNdpIndex is\nzero. Nothing requires the offsets to advance, so a modem that\npoints an NDP at itself, or at an earlier NDP, keeps the loop\nspinning forever on one CPU.\n\nBreak out when the next NDP offset is not larger than the current\none.\n\n\nVerified in a QEMU guest with a fault injector feeding the driver's\nreceive callback an NTB whose single NDP points at itself: the\nunpatched driver spins in mhi_mbim_rx() with one CPU pinned at 100%\nand the thread never returns. With this check the loop terminates\nwithin one iteration.\n\nChanges in v2: move the non-increasing check to the wNextNdpIndex\nretrieval site, as suggested by Loic Poulain, instead of tracking\nthe previous offset in a separate variable."}], "id": "CVE-2026-98237", "lastModified": "2026-10-19T10:18:24.543", "metrics": {}, "published": "2026-10-06T09:18:11.500", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/19b5e8dd884a530d04482e1a8e547f43cad17ed7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/24ade82d6d993274e99c2c6998848751c35292e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3ed36ee1b29b028f6bc2ebe100152f61a33df05a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5d063822ac5184939c1ed377a339a01d8ae814e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/829fec45122da58d77a55a3b7ca514dafab98e77"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8dad70ff7e25cbcfbcb5101fdbf36d98003eb653"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain", "id": "2546424", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546424"}, "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-835", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain\nThe NDP traversal in mhi_mbim_rx() only stops when wNextNdpIndex is\nzero. Nothing requires the offsets to advance, so a modem that\npoints an NDP at itself, or at an earlier NDP, keeps the loop\nspinning forever on one CPU.\nBreak out when the next NDP offset is not larger than the current\none.\nVerified in a QEMU guest with a fault injector feeding the driver's\nreceive callback an NTB whose single NDP points at itself: the\nunpatched driver spins in mhi_mbim_rx() with one CPU pinned at 100%\nand the thread never returns. With this check the loop terminates\nwithin one iteration.\nChanges in v2: move the non-increasing check to the wNextNdpIndex\nretrieval site, as suggested by Loic Poulain, instead of tracking\nthe previous offset in a separate variable.", "A flaw was found in the Linux kernel's MHI Mobile Broadband Interface Model (MBIM) driver. This flaw allows a malicious or compromised modem to cause a Denial of Service (DoS) by sending network frames with cyclic Network Datagram Pointer (NDP) chains that do not advance. Processing these cyclic descriptors causes an infinite loop in the driver, pinning a CPU core at full capacity and hanging the receiving thread."], "name": "CVE-2026-98237", "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": "Not affected", "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-2026-98237\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98237\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98237.mbox"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aa730a9905b7b079ef2fffdab7f15dbb842f5c7c,3ed36ee1b29b028f6bc2ebe100152f61a33df05a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aa730a9905b7b079ef2fffdab7f15dbb842f5c7c,e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aa730a9905b7b079ef2fffdab7f15dbb842f5c7c,19b5e8dd884a530d04482e1a8e547f43cad17ed7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aa730a9905b7b079ef2fffdab7f15dbb842f5c7c,24ade82d6d993274e99c2c6998848751c35292e7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aa730a9905b7b079ef2fffdab7f15dbb842f5c7c,8dad70ff7e25cbcfbcb5101fdbf36d98003eb653)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aa730a9905b7b079ef2fffdab7f15dbb842f5c7c,829fec45122da58d77a55a3b7ca514dafab98e77)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aa730a9905b7b079ef2fffdab7f15dbb842f5c7c,5d063822ac5184939c1ed377a339a01d8ae814e8)"}}], "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": "generic", "value": "[0,5.15)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.222,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.189,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.158,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.112,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.54,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.8,7.2.*]"}}, {"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": "2026-10-06T12:00:15.382095+00:00", "updated": "2026-10-10T03:30:16.494713+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}