High
Security advisory
memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and deadlocks due to items existing in hash table being reused from free list. This attack appear to be exploitable via network connectivity to the memcached service. This vulnerability appears to have been fixed in 1.4.37 and later.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-1000127
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:16 UTC · Revision 1
Source evidence
memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and deadlocks due to items existing in hash table being reused from free list. This attack appear to be exploitable via network connectivity to the memcached service. This vulnerability appears to have been fixed in 1.4.37 and later.
osv:CVE-2018-1000127
Complete source record
{
"id": "71e34840664a1ae858ce16a9579d5aa14d2ea7432e5b19e2271acc0b1413c0ea",
"url": "https://osv.dev/vulnerability/CVE-2018-1000127",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-1000127",
"summary": "memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and deadlocks due to items existing in hash table being reused from free list. This attack appear to be exploitable via network connectivity to the memcached service. This vulnerability appears to have been fixed in 1.4.37 and later.",
"evidence": "osv:CVE-2018-1000127",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-1000127",
"aliases": [
"CVE-2018-1000127"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/memcached/memcached",
"type": "GIT",
"events": [
{
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},
{
"fixed": "e01bc5cca551845ea139aceefc484f303901cdc2"
},
{
"fixed": "a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00"
}
],
"database_specific": {
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{
"cpe": "cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*",
"range": [
{
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},
{
"fixed": "1.4.37"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
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"1.4.35",
"1.4.34",
"1.4.33",
"1.4.32",
"1.4.31",
"1.4.30",
"1.4.29",
"1.4.28",
"1.4.27",
"1.4.26",
"1.4.25",
"1.4.24",
"1.4.23",
"1.4.22",
"1.4.21",
"1.4.20",
"1.4.19",
"1.4.18",
"1.4.17",
"1.4.16",
"1.4.15",
"1.4.14",
"1.4.13",
"1.4.12",
"1.4.11-rc1",
"1.4.11",
"1.4.11-beta1",
"1.4.10",
"1.4.9",
"1.4.8",
"1.4.8-rc1",
"1.4.7-rc1",
"1.4.7",
"1.4.6",
"1.4.6-rc1",
"1.4.5",
"1.4.4",
"1.4.3",
"1.4.3-rc2",
"1.4.3-rc1",
"1.4.2",
"1.4.2-rc1",
"1.4.1",
"1.4.1-rc1",
"1.4.0",
"1.4-rc1",
"1.4.0-rc1",
"1.3.3",
"1.3.2",
"1.2.4",
"1.2.3",
"1.2.2",
"1.2.1",
"1.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000127.json",
"vanir_signatures": [
{
"id": "CVE-2018-1000127-17b1fd8c",
"digest": {
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"line_hashes": [
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},
"source": "https://github.com/memcached/memcached/commit/a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00",
"target": {
"file": "memcached.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2018-1000127-84185067",
"digest": {
"length": 4182,
"function_hash": "248674664190854414244357360897815887031"
},
"source": "https://github.com/memcached/memcached/commit/a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00",
"target": {
"file": "memcached.c",
"function": "process_get_command"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2018-1000127-d2333629",
"digest": {
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"line_hashes": [
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},
"source": "https://github.com/memcached/memcached/commit/e01bc5cca551845ea139aceefc484f303901cdc2",
"target": {
"file": "items.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2018-1000127-e0e7515e",
"digest": {
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"function_hash": "258462072439635049322093280535354653052"
},
"source": "https://github.com/memcached/memcached/commit/e01bc5cca551845ea139aceefc484f303901cdc2",
"target": {
"file": "items.c",
"function": "lru_maintainer_crawler_check"
},
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"signature_type": "Function",
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}
],
"vanir_signatures_modified": "2026-10-20T13:25:24Z"
}
}
],
"modified": "2026-10-20T13:25:24.037313119Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2018:2290",
"https://github.com/memcached/memcached/issues/271",
"https://github.com/memcached/memcached/wiki/ReleaseNotes1437",
"https://lists.debian.org/debian-lts-announce/2018/03/msg00031.html",
"https://usn.ubuntu.com/3601-1/",
"https://www.debian.org/security/2018/dsa-4218",
"https://github.com/memcached/memcached/commit/a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00"
],
"provider_metadata": {
"unresolved_ranges": [
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"cpes": [
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"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "17.10"
},
{
"last_affected": "17.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
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"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "8.0"
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{
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},
{
"introduced": "9.0"
},
{
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}
],
"source": "CPE_STRING"
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]
},
{
"cpes": [
"cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:openstack",
"extracted_events": [
{
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{
"introduced": "10"
},
{
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}
],
"source": "CPE_STRING"
}
]
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]
}
},
"related_cves": [
{
"value": "CVE-2018-1000127",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387662,
"published_at": "2018-03-13T21:29:00.477+00:00"
}