CVE-2023-52620 (GCVE-0-2023-52620)
Vulnerability from cvelistv5 – Published: 2024-03-21 10:43 – Updated: 2026-08-05 09:10
VLAI
EPSS
VEX
Title
netfilter: nf_tables: disallow timeout for anonymous sets
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: disallow timeout for anonymous sets
Never used from userspace, disallow these parameters.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-26 20:33 UTC
Assigner
References
9 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
761da2935d6e18d178582dbdf315a3a458555505 , < 116b0e8e4673a5faa8a739a19b467010c4d3058c
(git)
Affected: 761da2935d6e18d178582dbdf315a3a458555505 , < 49ce99ae43314d887153e07cec8bb6a647a19268 (git) Affected: 761da2935d6e18d178582dbdf315a3a458555505 , < 6f3ae02bbb62f151b19162d5fdc9fe3d48450323 (git) Affected: 761da2935d6e18d178582dbdf315a3a458555505 , < 00b19ee0dcc1aef06294471ab489bae26d94524e (git) Affected: 761da2935d6e18d178582dbdf315a3a458555505 , < b7be6c737a179a76901c872f6b4c1d00552d9a1b (git) Affected: 761da2935d6e18d178582dbdf315a3a458555505 , < e26d3009efda338f19016df4175f354a9bd0a4ab (git) |
guessed | |
| Linux | Linux |
Affected:
4.1
Unaffected: 0 , < 4.1 (semver) Unaffected: 4.19.312 , ≤ 4.19.* (semver) Unaffected: 5.4.274 , ≤ 5.4.* (semver) Unaffected: 5.10.215 , ≤ 5.10.* (semver) Unaffected: 5.15.151 , ≤ 5.15.* (semver) Unaffected: 6.1.81 , ≤ 6.1.* (semver) Unaffected: 6.4 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 2.5,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2023-52620",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-26T20:33:31.634112Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-noinfo Not enough information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-11-06T20:01:21.818Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-02T23:03:21.362Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T11:21:42.651Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
],
"x_adpType": "supplier"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "116b0e8e4673a5faa8a739a19b467010c4d3058c",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "49ce99ae43314d887153e07cec8bb6a647a19268",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "6f3ae02bbb62f151b19162d5fdc9fe3d48450323",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "00b19ee0dcc1aef06294471ab489bae26d94524e",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "b7be6c737a179a76901c872f6b4c1d00552d9a1b",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "e26d3009efda338f19016df4175f354a9bd0a4ab",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.1"
},
{
"lessThan": "4.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.312",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.274",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.215",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.151",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.81",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.19.312",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.274",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.215",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.151",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.81",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.4",
"versionStartIncluding": "4.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: disallow timeout for anonymous sets\n\nNever used from userspace, disallow these parameters."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The bug is triggered via the nfnetlink/nf_tables control plane (NFT_MSG_NEWSET with timeout attributes on an anonymous set, then rule delete), which requires a local netlink socket; nftables netlink is a Local attack vector.\nAC:L - The attacker fully controls both sides of the race by setting NFTA_SET_TIMEOUT/NFTA_SET_GC_INTERVAL (driving async rhash/pipapo GC frequency and element expiry) and issuing the unbind/delete transaction, and can retry indefinitely until the GC batch races with set teardown.\nPR:L - nfnetlink_rcv() only requires CAP_NET_ADMIN in the network namespace\u2019s user_ns via netlink_net_capable(), which an unprivileged user obtains with unshare -Urn; nftables is fully functional per-netns.\nUI:N - Creating the anonymous timeout set, populating expiring elements, and deleting the binding rule are all performed by the attacker\u2019s own process with no victim action.\nS:U - The resulting use-after-free corrupts kernel heap state within the same kernel security authority; this is standard local privilege escalation with no VM/IOMMU/sandbox boundary crossed.\nC:H - The GC-vs-destroy race yields a use-after-free on nft_rhash_elem/set objects whose size and contents the attacker chooses, enabling heap spray and arbitrary kernel memory disclosure; per guidance any UAF is Confidentiality High.\nI:H - Concurrent GC removal and set destroy produce UAF/double-free of attacker-sized slab objects\u2014the same nftables heap-corruption primitive class used for local privilege escalation (as in related CVE-2024-26642/26643)\u2014so Integrity is High.\nA:H - Even without successful exploitation, the UAF/double-free on set elements and the destroyed rhashtable causes slab corruption and kernel oops/panic, and the attacker can trigger it repeatedly."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T09:10:45.446Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
}
],
"title": "netfilter: nf_tables: disallow timeout for anonymous sets",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-52620",
"datePublished": "2024-03-21T10:43:42.854Z",
"dateReserved": "2024-03-06T09:52:12.090Z",
"dateUpdated": "2026-08-05T09:10:45.446Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2023-52620",
"date": "2026-09-19",
"epss": "0.00265",
"percentile": "0.1872"
},
"fkie_nvd": {
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: disallow timeout for anonymous sets\n\nNever used from userspace, disallow these parameters."
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nf_tables: no permite el tiempo de espera para conjuntos an\u00f3nimos Nunca se usa desde el espacio de usuario, no permita estos par\u00e1metros."
}
],
"id": "CVE-2023-52620",
"lastModified": "2024-11-21T08:40:13.067",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 2.5,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 1.4,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
},
"published": "2024-03-21T11:15:28.230",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "116b0e8e4673a5faa8a739a19b467010c4d3058c",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "49ce99ae43314d887153e07cec8bb6a647a19268",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "6f3ae02bbb62f151b19162d5fdc9fe3d48450323",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "00b19ee0dcc1aef06294471ab489bae26d94524e",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "b7be6c737a179a76901c872f6b4c1d00552d9a1b",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "e26d3009efda338f19016df4175f354a9bd0a4ab",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.1"
},
{
"lessThan": "4.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.312",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.274",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.215",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.151",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.81",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "23F858DD-6739-4BD9-9DA9-A9F5F66187C0",
"versionEndExcluding": "4.19.312",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F45A0F3C-C16D-49C4-86D6-D021C3D4B834",
"versionEndExcluding": "5.4.274",
"versionStartIncluding": "4.20",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9CD5894E-58E9-4B4A-B0F4-3E6BC134B8F5",
"versionEndExcluding": "5.10.215",
"versionStartIncluding": "5.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EEAFD33E-C22F-4FB1-A417-9C96AB3E0358",
"versionEndExcluding": "5.15.151",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EC825B0E-DFCA-4034-9B92-F111A4E2A732",
"versionEndExcluding": "6.1.81",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0F35D0CC-0461-4526-BC9C-091805061E47",
"versionEndExcluding": "6.4",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*",
"matchCriteriaId": "38BC6744-7D25-4C02-9966-B224CD071D30",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*",
"matchCriteriaId": "76061B41-CAE9-4467-BEDE-0FFC7956F2A1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:*",
"matchCriteriaId": "A717BA5B-D535-46A0-A329-A25FE5CEC588",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*",
"matchCriteriaId": "89CC80C6-F1EE-4AC7-BD21-DB3217BADE87",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*",
"matchCriteriaId": "41EACEA1-FB69-4AF2-BC52-D39489858D42",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*",
"matchCriteriaId": "9E1C36BE-F9D8-40B6-8281-5B8F9B42322D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.4:rc7:*:*:*:*:*:*",
"matchCriteriaId": "1D6CAA59-F0EF-4E0B-8C23-EC9535008572",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: disallow timeout for anonymous sets\n\nNever used from userspace, disallow these parameters."
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: netfilter: nf_tables: no permite el tiempo de espera para conjuntos an\u00f3nimos Nunca se usa desde el espacio de usuario, no permita estos par\u00e1metros."
}
],
"id": "CVE-2023-52620",
"lastModified": "2026-08-04T10:18:35.157",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 2.5,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 2.5,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 1.4,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-52620",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-26T20:33:31.634112Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-03-21T11:15:28.230",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T06:33:58+00:00",
"cve": "CVE-2023-52620",
"id": "CVE-2023-52620",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:fixed": "429",
"product_status:known_affected": "42",
"product_status:known_not_affected": "22",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: netfilter: nf_tables: disallow timeout for anonymous sets",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52620.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-11T02:24:50Z",
"cve": "CVE-2023-52620",
"id": "CVE-2023-52620",
"initial_release_date": "2024-03-22T04:18:36Z",
"product_status:known_affected": "572",
"product_status:known_not_affected": "59",
"product_status:recommended": "451",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-52620",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52620.json",
"version": "59"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T23:03:21.362Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-12T11:21:42.651Z",
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP"
},
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
],
"x_adpType": "supplier"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 2.5,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2023-52620",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-26T20:33:31.634112Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-noinfo Not enough information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-06-26T20:33:34.757Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "116b0e8e4673a5faa8a739a19b467010c4d3058c",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "49ce99ae43314d887153e07cec8bb6a647a19268",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "6f3ae02bbb62f151b19162d5fdc9fe3d48450323",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "00b19ee0dcc1aef06294471ab489bae26d94524e",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "b7be6c737a179a76901c872f6b4c1d00552d9a1b",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
},
{
"lessThan": "e26d3009efda338f19016df4175f354a9bd0a4ab",
"status": "affected",
"version": "761da2935d6e18d178582dbdf315a3a458555505",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/netfilter/nf_tables_api.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.1"
},
{
"lessThan": "4.1",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.312",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.274",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.215",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.151",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.81",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.19.312",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.274",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.215",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.151",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.81",
"versionStartIncluding": "4.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.4",
"versionStartIncluding": "4.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: disallow timeout for anonymous sets\n\nNever used from userspace, disallow these parameters."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The bug is triggered via the nfnetlink/nf_tables control plane (NFT_MSG_NEWSET with timeout attributes on an anonymous set, then rule delete), which requires a local netlink socket; nftables netlink is a Local attack vector.\nAC:L - The attacker fully controls both sides of the race by setting NFTA_SET_TIMEOUT/NFTA_SET_GC_INTERVAL (driving async rhash/pipapo GC frequency and element expiry) and issuing the unbind/delete transaction, and can retry indefinitely until the GC batch races with set teardown.\nPR:L - nfnetlink_rcv() only requires CAP_NET_ADMIN in the network namespace\u2019s user_ns via netlink_net_capable(), which an unprivileged user obtains with unshare -Urn; nftables is fully functional per-netns.\nUI:N - Creating the anonymous timeout set, populating expiring elements, and deleting the binding rule are all performed by the attacker\u2019s own process with no victim action.\nS:U - The resulting use-after-free corrupts kernel heap state within the same kernel security authority; this is standard local privilege escalation with no VM/IOMMU/sandbox boundary crossed.\nC:H - The GC-vs-destroy race yields a use-after-free on nft_rhash_elem/set objects whose size and contents the attacker chooses, enabling heap spray and arbitrary kernel memory disclosure; per guidance any UAF is Confidentiality High.\nI:H - Concurrent GC removal and set destroy produce UAF/double-free of attacker-sized slab objects\u2014the same nftables heap-corruption primitive class used for local privilege escalation (as in related CVE-2024-26642/26643)\u2014so Integrity is High.\nA:H - Even without successful exploitation, the UAF/double-free on set elements and the destroyed rhashtable causes slab corruption and kernel oops/panic, and the attacker can trigger it repeatedly."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T09:10:45.446Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/116b0e8e4673a5faa8a739a19b467010c4d3058c"
},
{
"url": "https://git.kernel.org/stable/c/49ce99ae43314d887153e07cec8bb6a647a19268"
},
{
"url": "https://git.kernel.org/stable/c/6f3ae02bbb62f151b19162d5fdc9fe3d48450323"
},
{
"url": "https://git.kernel.org/stable/c/00b19ee0dcc1aef06294471ab489bae26d94524e"
},
{
"url": "https://git.kernel.org/stable/c/b7be6c737a179a76901c872f6b4c1d00552d9a1b"
},
{
"url": "https://git.kernel.org/stable/c/e26d3009efda338f19016df4175f354a9bd0a4ab"
}
],
"title": "netfilter: nf_tables: disallow timeout for anonymous sets",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-52620",
"datePublished": "2024-03-21T10:43:42.854Z",
"dateReserved": "2024-03-06T09:52:12.090Z",
"dateUpdated": "2026-08-05T09:10:45.446Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…