310 lines
15 KiB
JSON
310 lines
15 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-31679",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-03-09T15:48:24.130Z",
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"datePublished": "2026-04-25T08:46:55.584Z",
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"dateUpdated": "2026-10-19T18:56:04.364Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:24:25.701Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: validate MPLS set/set_masked payload length\n\nvalidate_set() accepted OVS_KEY_ATTR_MPLS as variable-sized payload for\nSET/SET_MASKED actions. In action handling, OVS expects fixed-size\nMPLS key data (struct ovs_key_mpls).\n\nUse the already normalized key_len (masked case included) and reject\nnon-matching MPLS action key sizes.\n\nReject invalid MPLS action payload lengths early."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable path is reached through Open vSwitch generic netlink commands that install or execute datapath actions, not by unauthenticated remote packets alone.\nAC:L - An attacker can craft the malformed MPLS SET/SET_MASKED netlink attributes and an MPLS packet directly; there is no race or victim-controlled timing requirement.\nPR:L - The relevant OVS commands require CAP_NET_ADMIN, but the families are netns-aware and use GENL_UNS_ADMIN_PERM, making them reachable with CAP_NET_ADMIN in a user-created network namespace.\nUI:N - No victim interaction is required once the attacker can send the crafted netlink request or trigger the installed action.\nS:U - The impact remains within the kernel/host networking security authority and does not cross a VM, IOMMU, or similar scope boundary.\nC:H - The invalid MPLS payload length can make action execution read beyond the validated netlink action data from kernel heap storage. Although each read is small, repeated attacker-controlled triggering and heap layout influence make high confidentiality impact the safer defensible choice.\nI:N - The bug causes out-of-bounds reads and attacker-influenced packet MPLS rewriting, but it does not provide a kernel memory write primitive or control-flow modification.\nA:H - The out-of-bounds kernel heap read can trigger a kernel fault or sanitizer-detected panic, and the crafted action can be exercised repeatedly without user interaction."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/openvswitch/flow_netlink.c"
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],
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"versions": [
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "4cae986225f8b8679ad86b924918e7d75a96aa61",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "8ed7b9930cbc3bc71f868fa79a68700ac88d586a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "c1f97152df8dfb17e855ddf0fc409b7bd13e9700",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "98de18d327ef8cbbb704980e359e4872d8c28997",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "bd50c7484c3bb34097571c1334174fb8b7408036",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "2ca33b88a79ca42f017ae0f7011280325655438e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbdcdd78da7c95f1b970d371e1b23cbd3aa990f3",
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"lessThan": "546b68ac893595877ffbd7751e5c55fd1c43ede6",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/openvswitch/flow_netlink.c"
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],
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"versions": [
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{
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"version": "5.5",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.5",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.253",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.203",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.168",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.131",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.80",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.21",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19.11",
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"lessThanOrEqual": "6.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.0",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "5.10.253"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "5.15.203"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.1.168"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.6.131"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.12.80"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "6.18.21"
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "6.19.11"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "7.0"
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/68f32ef0683c8d1c05cd2e4f16818fa63ff59c6f"
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},
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{
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"url": "https://git.kernel.org/stable/c/4cae986225f8b8679ad86b924918e7d75a96aa61"
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},
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{
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"url": "https://git.kernel.org/stable/c/8ed7b9930cbc3bc71f868fa79a68700ac88d586a"
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},
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{
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"url": "https://git.kernel.org/stable/c/c1f97152df8dfb17e855ddf0fc409b7bd13e9700"
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},
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{
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"url": "https://git.kernel.org/stable/c/98de18d327ef8cbbb704980e359e4872d8c28997"
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},
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{
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"url": "https://git.kernel.org/stable/c/bd50c7484c3bb34097571c1334174fb8b7408036"
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},
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{
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"url": "https://git.kernel.org/stable/c/2ca33b88a79ca42f017ae0f7011280325655438e"
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},
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{
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"url": "https://git.kernel.org/stable/c/546b68ac893595877ffbd7751e5c55fd1c43ede6"
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}
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],
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"title": "openvswitch: validate MPLS set/set_masked payload length",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-31679",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:12:20.188389Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-20",
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"description": "CWE-20 Improper Input Validation"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T18:56:04.364Z"
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}
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}
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]
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}
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} |