{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68432", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.393Z", "datePublished": "2026-08-12T00:07:18.806Z", "dateUpdated": "2026-08-12T00:07:18.806Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-12T00:07:18.806Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: require CAP_NET_ADMIN in the device netns for changelink\n\nA tunnel changelink() operates on at most two netns, dev_net(dev) and\nthe sticky underlay netns vxlan->net. They differ once the device is\ncreated in or moved to a netns other than the one the request runs in.\nThe rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev),\nso a caller privileged there but not in vxlan->net can rewrite a vxlan\ndevice whose underlay lives in vxlan->net.\n\nvxlan_changelink() validates and applies the new configuration against\nvxlan->net (vxlan_config_validate(vxlan->net, ...)) and can reopen the\nunderlay socket in that netns, so the same reasoning as the tunnel\nchangelink series applies here.\n\nGate vxlan_changelink() with rtnl_dev_link_net_capable(), at the top of\nthe op before any attribute is parsed, matching ipgre_changelink() and\nthe rest of the \"require CAP_NET_ADMIN in the device netns for\nchangelink\" series.\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/vxlan/vxlan_core.c"], "versions": [{"version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "lessThan": "b3793d7dccb192ffff29894d11824db6251acdd5", "status": "affected", "versionType": "git"}, {"version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "lessThan": "32d10c46bfde3e9b274e9e1bd6399d0ebea8f60f", "status": "affected", "versionType": "git"}, {"version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "lessThan": "730c7e5fea7f06e0cdf21c547222ec93234fd1d6", "status": "affected", "versionType": "git"}, {"version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "lessThan": "e8ad0d311e225939a9a6c745d6cc384c7364ec87", "status": "affected", "versionType": "git"}, {"version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "lessThan": "3a61bd9637f3d929aa846e4eb3d98b48c26fcb0e", "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/vxlan/vxlan_core.c"], "versions": [{"version": "4.11", "status": "affected"}, {"version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc5", "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": "4.11", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.2-rc5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b3793d7dccb192ffff29894d11824db6251acdd5"}, {"url": "https://git.kernel.org/stable/c/32d10c46bfde3e9b274e9e1bd6399d0ebea8f60f"}, {"url": "https://git.kernel.org/stable/c/730c7e5fea7f06e0cdf21c547222ec93234fd1d6"}, {"url": "https://git.kernel.org/stable/c/e8ad0d311e225939a9a6c745d6cc384c7364ec87"}, {"url": "https://git.kernel.org/stable/c/3a61bd9637f3d929aa846e4eb3d98b48c26fcb0e"}], "title": "vxlan: require CAP_NET_ADMIN in the device netns for changelink", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/vxlan/vxlan_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "b3793d7dccb192ffff29894d11824db6251acdd5", "status": "affected", "version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "versionType": "git"}, {"lessThan": "32d10c46bfde3e9b274e9e1bd6399d0ebea8f60f", "status": "affected", "version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "versionType": "git"}, {"lessThan": "730c7e5fea7f06e0cdf21c547222ec93234fd1d6", "status": "affected", "version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "versionType": "git"}, {"lessThan": "e8ad0d311e225939a9a6c745d6cc384c7364ec87", "status": "affected", "version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "versionType": "git"}, {"lessThan": "3a61bd9637f3d929aa846e4eb3d98b48c26fcb0e", "status": "affected", "version": "8bcdc4f3a20be949df54b67e5ae2734daabb5792", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/vxlan/vxlan_core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.11"}, {"lessThan": "4.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc5", "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\nvxlan: require CAP_NET_ADMIN in the device netns for changelink\n\nA tunnel changelink() operates on at most two netns, dev_net(dev) and\nthe sticky underlay netns vxlan->net. They differ once the device is\ncreated in or moved to a netns other than the one the request runs in.\nThe rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev),\nso a caller privileged there but not in vxlan->net can rewrite a vxlan\ndevice whose underlay lives in vxlan->net.\n\nvxlan_changelink() validates and applies the new configuration against\nvxlan->net (vxlan_config_validate(vxlan->net, ...)) and can reopen the\nunderlay socket in that netns, so the same reasoning as the tunnel\nchangelink series applies here.\n\nGate vxlan_changelink() with rtnl_dev_link_net_capable(), at the top of\nthe op before any attribute is parsed, matching ipgre_changelink() and\nthe rest of the \"require CAP_NET_ADMIN in the device netns for\nchangelink\" series.\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."}], "id": "CVE-2026-68432", "lastModified": "2026-08-12T00:17:43.290", "metrics": {}, "published": "2026-08-12T00:17:43.290", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/32d10c46bfde3e9b274e9e1bd6399d0ebea8f60f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3a61bd9637f3d929aa846e4eb3d98b48c26fcb0e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/730c7e5fea7f06e0cdf21c547222ec93234fd1d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b3793d7dccb192ffff29894d11824db6251acdd5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8ad0d311e225939a9a6c745d6cc384c7364ec87"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}