gsd-2021-47213
Vulnerability from gsd
Modified
2024-04-11 05:05
Details
In the Linux kernel, the following vulnerability has been resolved:
NFSD: Fix exposure in nfsd4_decode_bitmap()
rtm@csail.mit.edu reports:
> nfsd4_decode_bitmap4() will write beyond bmval[bmlen-1] if the RPC
> directs it to do so. This can cause nfsd4_decode_state_protect4_a()
> to write client-supplied data beyond the end of
> nfsd4_exchange_id.spo_must_allow[] when called by
> nfsd4_decode_exchange_id().
Rewrite the loops so nfsd4_decode_bitmap() cannot iterate beyond
@bmlen.
Reported by: rtm@csail.mit.edu
Aliases
{ "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2021-47213" ], "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Fix exposure in nfsd4_decode_bitmap()\n\nrtm@csail.mit.edu reports:\n\u003e nfsd4_decode_bitmap4() will write beyond bmval[bmlen-1] if the RPC\n\u003e directs it to do so. This can cause nfsd4_decode_state_protect4_a()\n\u003e to write client-supplied data beyond the end of\n\u003e nfsd4_exchange_id.spo_must_allow[] when called by\n\u003e nfsd4_decode_exchange_id().\n\nRewrite the loops so nfsd4_decode_bitmap() cannot iterate beyond\n@bmlen.\n\nReported by: rtm@csail.mit.edu", "id": "GSD-2021-47213", "modified": "2024-04-11T05:05:09.655542Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@kernel.org", "ID": "CVE-2021-47213", "STATE": "REJECT" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "** REJECT ** This CVE ID has been rejected or withdrawn by its CVE Numbering Authority." } ] } }, "nvd.nist.gov": { "cve": { "descriptions": [ { "lang": "en", "value": "Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority." } ], "id": "CVE-2021-47213", "lastModified": "2024-04-15T09:15:07.570", "metrics": {}, "published": "2024-04-10T19:15:48.640", "references": [], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Rejected" } } } }
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Sightings
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Nomenclature
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