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vuln-cve/data/2026/53xxx/CVE-2026-53269.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-53269",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-06-09T07:44:35.395Z",
"datePublished": "2026-06-25T08:39:55.172Z",
"dateUpdated": "2026-11-10T12:48:26.237Z"
},
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},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: synproxy: add mutex to guard hook reference counting\n\nAs the synproxy infrastructure register netfilter hooks on-demand when a\nuser adds the first iptables target or nftables expression, if done\nconcurrently they can race each other.\n\nIntroduce a mutex to serialize the refcount control blocks access from\nboth frontends. While a per namespace mutex might be more efficient, it\nis not needed for target/expression like SYNPROXY."
}
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"net/netfilter/nf_synproxy_core.c"
],
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"status": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"status": "affected"
},
{
"version": "0",
"lessThan": "5.3",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.259",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
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{
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"status": "unaffected",
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{
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{
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"versionType": "semver"
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{
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"status": "unaffected",
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{
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{
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"status": "unaffected",
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{
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"status": "unaffected",
"versionType": "original_commit_for_fix"
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}
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"nodes": [
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"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"url": "https://git.kernel.org/stable/c/0ec9ddc1bda261a2c57636c74c8b4e53000102c9"
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{
"url": "https://git.kernel.org/stable/c/56ffbe3a08c01dcdb0d6adee9ce1e535bfb3b389"
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{
"url": "https://git.kernel.org/stable/c/debc57b83d5b323df74bf010c8d50fe26ad2ed6b"
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{
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{
"url": "https://git.kernel.org/stable/c/aaf80701dc2f7a48fe543961e21f8ca3924d587c"
},
{
"url": "https://git.kernel.org/stable/c/fbf0591275f50eae5733c3d7a8cd6c1e79933ffa"
},
{
"url": "https://git.kernel.org/stable/c/2fcba19caaeb2a33017459d3430f057967bb91b6"
}
],
"title": "netfilter: synproxy: add mutex to guard hook reference counting",
"x_generator": {
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