CVE-2026-31738

{"id": "CVE-2026-31738", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31738", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:24:44.664769Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "901c1dd3bab2955d7e664f914c374c8c3ac2b958", "versionType": "git"}, {"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "e476745917a1e288eb15e7ff49d286a86a4861d3", "versionType": "git"}, {"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "2029712fb2c87e9a8c75094906f2ee29bf08c500", "versionType": "git"}, {"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "602596c69a70e50d9ab8c6ae0290a01f88229dd7", "versionType": "git"}, {"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "de20d2e3b9179d132f5f5b44e490d7c916c6321b", "versionType": "git"}, {"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "eddfce70a6f3107d1679b0c2fcbeb96b593bd679", "versionType": "git"}, {"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "b69c4236255bd8de16cd876e58c6f0867d1d78b1", "versionType": "git"}, {"status": "affected", "version": "4b29dba9c085a4fb79058fb1c45a2f6257ca3dfa", "lessThan": "afa9a05e6c4971bd5586f1b304e14d61fb3d9385", "versionType": "git"}, {"status": "affected", "version": "d8be18c52dbc94989f6d74637b731af39cd3d902", "versionType": "git"}, {"status": "affected", "version": "3927dace523706cc00f808520eaf2125dd7c07b5", "versionType": "git"}, {"status": "affected", "version": "3.12.18", "lessThan": "3.13", "versionType": "semver"}, {"status": "affected", "version": "3.13.10", "lessThan": "3.14", "versionType": "semver"}], "programFiles": ["drivers/net/vxlan/vxlan_core.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.14"}, {"status": "unaffected", "version": "0", "lessThan": "3.14", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.253", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.203", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.168", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.134", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.81", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.22", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.12", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/vxlan/vxlan_core.c"], "defaultStatus": "affected"}]}], "published": "2026-05-01T15:16:36.473", "references": [{"url": "https://git.kernel.org/stable/c/2029712fb2c87e9a8c75094906f2ee29bf08c500", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/602596c69a70e50d9ab8c6ae0290a01f88229dd7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/901c1dd3bab2955d7e664f914c374c8c3ac2b958", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/afa9a05e6c4971bd5586f1b304e14d61fb3d9385", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b69c4236255bd8de16cd876e58c6f0867d1d78b1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/de20d2e3b9179d132f5f5b44e490d7c916c6321b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e476745917a1e288eb15e7ff49d286a86a4861d3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eddfce70a6f3107d1679b0c2fcbeb96b593bd679", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: validate ND option lengths in vxlan_na_create\n\nvxlan_na_create() walks ND options according to option-provided\nlengths. A malformed option can make the parser advance beyond the\ncomputed option span or use a too-short source LLADDR option payload.\n\nValidate option lengths against the remaining NS option area before\nadvancing, and only read source LLADDR when the option is large enough\nfor an Ethernet address."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nvxlan: validar las longitudes de opci\u00f3n ND en vxlan_na_create\n\nvxlan_na_create() recorre las opciones ND seg\u00fan las longitudes proporcionadas por la opci\u00f3n. Una opci\u00f3n malformada puede hacer que el analizador avance m\u00e1s all\u00e1 del alcance de opci\u00f3n calculado o utilice una carga \u00fatil de opci\u00f3n LLADDR de origen demasiado corta.\n\nValidar las longitudes de opci\u00f3n contra el \u00e1rea de opci\u00f3n NS restante antes de avanzar, y solo leer LLADDR de origen cuando la opci\u00f3n sea lo suficientemente grande para una direcci\u00f3n Ethernet."}], "lastModified": "2026-11-11T21:10:00.200", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B3AB1AFE-C0A2-4331-AA17-444E45EF7B5A", "versionEndExcluding": "3.13", "versionStartIncluding": "3.12.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "32C97B50-DD9D-4C26-A3B5-3CB771644C8A", "versionEndExcluding": "3.14", "versionStartIncluding": "3.13.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96775134-B6E9-42CE-A367-9B4C33EFBF22", "versionEndExcluding": "5.10.253", "versionStartIncluding": "3.14.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "20DDB3E9-AABF-4107-ADB0-5362AA067045", "versionEndExcluding": "5.15.203", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2DDDCA1-6DAB-4018-B920-8F045DDD8D3B", "versionEndExcluding": "6.1.168", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F56F925B-BAF8-4F4B-B62F-1496AF19A307", "versionEndExcluding": "6.6.134", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6EF80433-B33B-43C5-8E64-0FA7B8DCE1BC", "versionEndExcluding": "6.12.81", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C9DF8BCE-36D3-475D-9D21-19E4F02F9029", "versionEndExcluding": "6.18.22", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A2B9540-02D5-41B4-B16A-82AF66FD4F36", "versionEndExcluding": "6.19.12", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.14:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "851B1505-0318-49F4-8D7C-196BE04FF173"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:3.14:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "055557BE-1FE9-45F5-8A95-F8D3C9B031E4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}