Action not permitted
Modal body text goes here.
Modal Title
Modal Body
EUVD-2026-345643
European Vulnerability Database identifier assigned by ENISAReserved
2026-10-02 08:03
Assigner
ENISA
Alias of
a CVE record, shown under related vulnerabilities.
This identifier carries no description, severity or references of its own:
they belong to that CVE.
{
"assigner": "ENISA",
"date_reserved": "2026-10-02T08:03:20.375418+00:00",
"id": "EUVD-2026-345643"
}
CVE-2024-27431 (GCVE-0-2024-27431)
Vulnerability from cvelistv5 – Published: 2024-05-17 12:02 – Updated: 2026-08-05 11:29
VLAI
EPSS
VEX
Title
cpumap: Zero-initialise xdp_rxq_info struct before running XDP program
Summary
In the Linux kernel, the following vulnerability has been resolved:
cpumap: Zero-initialise xdp_rxq_info struct before running XDP program
When running an XDP program that is attached to a cpumap entry, we don't
initialise the xdp_rxq_info data structure being used in the xdp_buff
that backs the XDP program invocation. Tobias noticed that this leads to
random values being returned as the xdp_md->rx_queue_index value for XDP
programs running in a cpumap.
This means we're basically returning the contents of the uninitialised
memory, which is bad. Fix this by zero-initialising the rxq data
structure before running the XDP program.
Severity
7.8 (High)
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-17 16:29 UTC
CWE
- CWE-908 - Use of Uninitialized Resource
Assigner
References
8 references
Impacted products
12 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
9216477449f33cdbc9c9a99d49f500b7fbb81702 , < 5f4e51abfbe6eb444fa91906a5cd083044278297
(git)
Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < f0363af9619c77730764f10360e36c6445c12f7b (git) Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < 3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95 (git) Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < f562e4c4aab00986dde3093c4be919c3f2b85a4a (git) Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < eaa7cb836659ced2d9f814ac32aa3ec193803ed6 (git) Affected: 9216477449f33cdbc9c9a99d49f500b7fbb81702 , < 2487007aa3b9fafbd2cb14068f49791ce1d7ede5 (git) |
|
| Linux | Linux |
Affected:
5.9
Unaffected: 0 , < 5.9 (semver) Unaffected: 5.10.213 , ≤ 5.10.* (semver) Unaffected: 5.15.152 , ≤ 5.15.* (semver) Unaffected: 6.1.82 , ≤ 6.1.* (semver) Unaffected: 6.6.22 , ≤ 6.6.* (semver) Unaffected: 6.7.10 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix) |
|
| linux | linux_kernel |
Affected:
9216477449f3
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Affected:
5.9
cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
0
cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
5.10.213
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
5.15.152
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.1.82
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.6.22
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.7.10
cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.8
cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
{
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "affected",
"version": "9216477449f3"
}
]
},
{
"cpes": [
"cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "affected",
"version": "5.9"
}
]
},
{
"cpes": [
"cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "unaffected",
"version": "0"
}
]
},
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "unaffected",
"version": "5.10.213"
}
]
},
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "unaffected",
"version": "5.15.152"
}
]
},
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "unaffected",
"version": "6.1.82"
}
]
},
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "unaffected",
"version": "6.6.22"
}
]
},
{
"cpes": [
"cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "unaffected",
"version": "6.7.10"
}
]
},
{
"cpes": [
"cpe:2.3:a:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"status": "unaffected",
"version": "6.8"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2024-27431",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-17T16:29:06.840486Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-908",
"description": "CWE-908 Use of Uninitialized Resource",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-01-23T21:49:35.963Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-02T00:34:52.315Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.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": "2026-05-12T11:51:37.909Z",
"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": [
"kernel/bpf/cpumap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "5f4e51abfbe6eb444fa91906a5cd083044278297",
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"versionType": "git"
},
{
"lessThan": "f0363af9619c77730764f10360e36c6445c12f7b",
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"versionType": "git"
},
{
"lessThan": "3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95",
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"versionType": "git"
},
{
"lessThan": "f562e4c4aab00986dde3093c4be919c3f2b85a4a",
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"versionType": "git"
},
{
"lessThan": "eaa7cb836659ced2d9f814ac32aa3ec193803ed6",
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"versionType": "git"
},
{
"lessThan": "2487007aa3b9fafbd2cb14068f49791ce1d7ede5",
"status": "affected",
"version": "9216477449f33cdbc9c9a99d49f500b7fbb81702",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"kernel/bpf/cpumap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.9"
},
{
"lessThan": "5.9",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.213",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.152",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.82",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.22",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"version": "6.7.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.8",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.213",
"versionStartIncluding": "5.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.152",
"versionStartIncluding": "5.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.82",
"versionStartIncluding": "5.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.22",
"versionStartIncluding": "5.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.7.10",
"versionStartIncluding": "5.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.8",
"versionStartIncluding": "5.9",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpumap: Zero-initialise xdp_rxq_info struct before running XDP program\n\nWhen running an XDP program that is attached to a cpumap entry, we don\u0027t\ninitialise the xdp_rxq_info data structure being used in the xdp_buff\nthat backs the XDP program invocation. Tobias noticed that this leads to\nrandom values being returned as the xdp_md-\u003erx_queue_index value for XDP\nprograms running in a cpumap.\n\nThis means we\u0027re basically returning the contents of the uninitialised\nmemory, which is bad. Fix this by zero-initialising the rxq data\nstructure before running the XDP program."
}
],
"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 - Exploitation requires the attacker to load a BPF program and populate a CPUMAP entry via the local bpf() syscall, then attach XDP to a local netdev; network packets only serve as the trigger the attacker generates themselves. No remote peer can reach this code path.\nAC:L - The uninitialized read is deterministic on every cpumap XDP invocation, and the attacker fully controls the setup (own veth/MTU, own XDP program, own traffic), so it can be triggered repeatedly and reliably, including grooming the kthread stack residue across unlimited retries.\nPR:L - Requires CAP_BPF plus CAP_NET_ADMIN, which are routinely delegated to non-root network daemons and container workloads (Cilium-style XDP/cpumap pipelines) rather than requiring full root; consistent with scoring of other BPF/XDP subsystem issues.\nUI:N - The attacker performs every step \u2014 map creation, program attach, and packet injection through their own interface \u2014 with no action needed from any other user.\nS:U - Both the uninitialized stack disclosure and the out-of-bounds fragment write are contained within the kernel\u0027s own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Uninitialized cpumap kthread stack memory is handed directly to the BPF program via xdp_md-\u003erx_queue_index and exfiltrated to userspace, repeatedly and with groomable content, leaking kernel pointers; the accompanying frag_size corruption additionally provides memory-corruption primitives leverageable for broader disclosure.\nI:H - Garbage rxq.frag_size makes the unsigned tailroom computation in bpf_xdp_frags_increase_tail() underflow, bypassing the bounds check and permitting memset() of an attacker-chosen length past the last fragment \u2014 an out-of-bounds heap write, plus inconsistent sinfo-\u003exdp_frags_size accounting propagated into subsequent skb construction.\nA:H - The out-of-bounds zeroing of adjacent page/heap memory corrupts unrelated kernel structures and leads to oops or panic, and the bogus queue_index/frag_size values also cause misrouted XSK redirects and inconsistent frame accounting in the receive path."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:29:46.451Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297"
},
{
"url": "https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b"
},
{
"url": "https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95"
},
{
"url": "https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a"
},
{
"url": "https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6"
},
{
"url": "https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5"
}
],
"title": "cpumap: Zero-initialise xdp_rxq_info struct before running XDP program",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-27431",
"datePublished": "2024-05-17T12:02:10.274Z",
"dateReserved": "2024-02-25T13:47:42.686Z",
"dateUpdated": "2026-08-05T11:29:46.451Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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…
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…
Loading…