CVE-2024-47728 (GCVE-0-2024-47728)
Vulnerability from cvelistv5 – Published: 2024-10-21 12:14 – Updated: 2026-05-11 20:39
VLAI
EPSS
VEX
Title
bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error
For all non-tracing helpers which formerly had ARG_PTR_TO_{LONG,INT} as input
arguments, zero the value for the case of an error as otherwise it could leak
memory. For tracing, it is not needed given CAP_PERFMON can already read all
kernel memory anyway hence bpf_get_func_arg() and bpf_get_func_ret() is skipped
in here.
Also, the MTU helpers mtu_len pointer value is being written but also read.
Technically, the MEM_UNINIT should not be there in order to always force init.
Removing MEM_UNINIT needs more verifier rework though: MEM_UNINIT right now
implies two things actually: i) write into memory, ii) memory does not have
to be initialized. If we lift MEM_UNINIT, it then becomes: i) read into memory,
ii) memory must be initialized. This means that for bpf_*_check_mtu() we're
readding the issue we're trying to fix, that is, it would then be able to
write back into things like .rodata BPF maps. Follow-up work will rework the
MEM_UNINIT semantics such that the intent can be better expressed. For now
just clear the *mtu_len on error path which can be lifted later again.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-21 13:00 UTC
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
d7a4cb9b6705a89937d12c8158a35a3145dc967a , < 8397bf78988f3ae9dbebb0200189a62a57264980
(git)
Affected: d7a4cb9b6705a89937d12c8158a35a3145dc967a , < a634fa8e480ac2423f86311a602f6295df2c8ed0 (git) Affected: d7a4cb9b6705a89937d12c8158a35a3145dc967a , < 599d15b6d03356a97bff7a76155c5604c42a2962 (git) Affected: d7a4cb9b6705a89937d12c8158a35a3145dc967a , < 594a9f5a8d2de2573a856e506f77ba7dd2cefc6a (git) Affected: d7a4cb9b6705a89937d12c8158a35a3145dc967a , < 4b3786a6c5397dc220b1483d8e2f4867743e966f (git) |
guessed | |
| Linux | Linux |
Affected:
5.2
Unaffected: 0 , < 5.2 (semver) Unaffected: 6.1.113 , ≤ 6.1.* (semver) Unaffected: 6.6.54 , ≤ 6.6.* (semver) Unaffected: 6.10.13 , ≤ 6.10.* (semver) Unaffected: 6.11.2 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
guessed |
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},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:21:25.047Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-47728\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-21T13:00:53.440960Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-21T13:00:57.615Z\"}}], \"cna\": {\"title\": \"bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d7a4cb9b6705a89937d12c8158a35a3145dc967a\", \"lessThan\": \"8397bf78988f3ae9dbebb0200189a62a57264980\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d7a4cb9b6705a89937d12c8158a35a3145dc967a\", \"lessThan\": \"a634fa8e480ac2423f86311a602f6295df2c8ed0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d7a4cb9b6705a89937d12c8158a35a3145dc967a\", \"lessThan\": \"599d15b6d03356a97bff7a76155c5604c42a2962\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d7a4cb9b6705a89937d12c8158a35a3145dc967a\", \"lessThan\": \"594a9f5a8d2de2573a856e506f77ba7dd2cefc6a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d7a4cb9b6705a89937d12c8158a35a3145dc967a\", \"lessThan\": \"4b3786a6c5397dc220b1483d8e2f4867743e966f\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/bpf/helpers.c\", \"kernel/bpf/syscall.c\", \"net/core/filter.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.54\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/bpf/helpers.c\", \"kernel/bpf/syscall.c\", \"net/core/filter.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8397bf78988f3ae9dbebb0200189a62a57264980\"}, {\"url\": \"https://git.kernel.org/stable/c/a634fa8e480ac2423f86311a602f6295df2c8ed0\"}, {\"url\": \"https://git.kernel.org/stable/c/599d15b6d03356a97bff7a76155c5604c42a2962\"}, {\"url\": \"https://git.kernel.org/stable/c/594a9f5a8d2de2573a856e506f77ba7dd2cefc6a\"}, {\"url\": \"https://git.kernel.org/stable/c/4b3786a6c5397dc220b1483d8e2f4867743e966f\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error\\n\\nFor all non-tracing helpers which formerly had ARG_PTR_TO_{LONG,INT} as input\\narguments, zero the value for the case of an error as otherwise it could leak\\nmemory. For tracing, it is not needed given CAP_PERFMON can already read all\\nkernel memory anyway hence bpf_get_func_arg() and bpf_get_func_ret() is skipped\\nin here.\\n\\nAlso, the MTU helpers mtu_len pointer value is being written but also read.\\nTechnically, the MEM_UNINIT should not be there in order to always force init.\\nRemoving MEM_UNINIT needs more verifier rework though: MEM_UNINIT right now\\nimplies two things actually: i) write into memory, ii) memory does not have\\nto be initialized. If we lift MEM_UNINIT, it then becomes: i) read into memory,\\nii) memory must be initialized. This means that for bpf_*_check_mtu() we\u0027re\\nreadding the issue we\u0027re trying to fix, that is, it would then be able to\\nwrite back into things like .rodata BPF maps. Follow-up work will rework the\\nMEM_UNINIT semantics such that the intent can be better expressed. For now\\njust clear the *mtu_len on error path which can be lifted later again.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.54\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.13\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.2\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"5.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:38:23.854Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-47728\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:21:25.047Z\", \"dateReserved\": \"2024-09-30T16:00:12.957Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T12:14:01.012Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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.
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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.
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.
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