185 lines
8.8 KiB
JSON
185 lines
8.8 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-2026-80838",
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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": "2026-08-26T14:34:25.796Z",
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"datePublished": "2026-09-04T15:54:48.371Z",
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"dateUpdated": "2026-10-19T08:44:30.457Z"
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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": "2026-10-19T08:44:30.457Z"
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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\nvxlan: keep the last remote linked during FDB flush\n\nA non-nexthop FDB entry is expected to have at least one remote while it\nremains reachable through the FDB hash table. A filtered bulk flush\nviolates this invariant when every remote matches: It unlinks the last\nremote in vxlan_fdb_dst_destroy() and only afterwards tells vxlan_flush()\nto destroy the parent FDB entry.\n\nAn RCU reader can find the parent during this interval.\nfirst_remote_rcu() then applies list_entry_rcu() to the empty list head,\nproducing an invalid remote pointer that the receive learning path can\nread from and write to.\n\nWhen a matching remote is the sole remaining remote, leave it linked and\nask the caller to destroy the entire FDB entry. vxlan_fdb_destroy() keeps\nthe remote attached while sending the deletion notification and removing\nthe parent from the lookup structures."
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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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"drivers/net/vxlan/vxlan_core.c"
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],
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"versions": [
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{
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"version": "c499fccb71cb85902b5c5b9ce9c9ae6683e54a8f",
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"lessThan": "2a7c2f00843225d5f037676bca649321f3d024c7",
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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": "c499fccb71cb85902b5c5b9ce9c9ae6683e54a8f",
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"lessThan": "a8820c8a7718327e96849782033e7c85a0f6bcfe",
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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": "c499fccb71cb85902b5c5b9ce9c9ae6683e54a8f",
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"lessThan": "8ba68fd6cdd1e3c92b92f25c7e48bf7bd51a183c",
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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": "c499fccb71cb85902b5c5b9ce9c9ae6683e54a8f",
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"lessThan": "4bbc76ee1b21d3bd045d6d819b2bacd30a6372ab",
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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": "c499fccb71cb85902b5c5b9ce9c9ae6683e54a8f",
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"lessThan": "d5d4a7b538b52db63927773a8905fcd9f78a42e2",
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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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"drivers/net/vxlan/vxlan_core.c"
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],
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"versions": [
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{
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"version": "6.7",
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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": "6.7",
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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": "6.12.108",
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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": "6.18.49",
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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": "7.1.13",
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"lessThanOrEqual": "7.1.*",
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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": "7.2.3",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "6.7",
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"versionEndExcluding": "6.12.108"
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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": "6.7",
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"versionEndExcluding": "6.18.49"
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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": "6.7",
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"versionEndExcluding": "7.1.13"
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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": "6.7",
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"versionEndExcluding": "7.2.3"
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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": "6.7",
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"versionEndExcluding": "7.3"
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}
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]
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}
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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/2a7c2f00843225d5f037676bca649321f3d024c7"
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},
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{
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"url": "https://git.kernel.org/stable/c/a8820c8a7718327e96849782033e7c85a0f6bcfe"
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},
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{
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"url": "https://git.kernel.org/stable/c/8ba68fd6cdd1e3c92b92f25c7e48bf7bd51a183c"
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},
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{
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"url": "https://git.kernel.org/stable/c/4bbc76ee1b21d3bd045d6d819b2bacd30a6372ab"
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},
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{
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"url": "https://git.kernel.org/stable/c/d5d4a7b538b52db63927773a8905fcd9f78a42e2"
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}
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],
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"title": "vxlan: keep the last remote linked during FDB flush",
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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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}
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} |