Low
valkey — security advisory
A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.
- Products
- valkey
- Affected versions
- 7.2.10+dfsg1-0ubuntu0.1, 7.2.11+dfsg1-0ubuntu0.1, 7.2.11+dfsg1-0ubuntu0.2, 7.2.12+dfsg1-0ubuntu0.1, 7.2.13+dfsg1-0ubuntu0.1, 7.2.13+dfsg1-0ubuntu0.1+esm1, 7.2.5+dfsg1-2ubuntu4~24.04.1, 7.2.7+dfsg1-0ubuntu0.24.04.1, 7.2.8+dfsg1-0ubuntu0.24.04.1, 7.2.8+dfsg1-0ubuntu0.24.04.2, 7.2.8+dfsg1-0ubuntu0.24.04.3, 8.1.3+dfsg1-0ubuntu2, 8.1.4+dfsg1-0ubuntu1, 9.0.2-0ubuntu1, 9.0.3-0ubuntu1, 9.0.3-0ubuntu2, 9.0.4-0ubuntu0.1, 9.0.4-0ubuntu0.2, 9.0.4-0ubuntu1, 9.1.1-0ubuntu2, 9.1.2-0ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-82677
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:21 UTC · Revision 1
Source evidence
A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.
osv:UBUNTU-CVE-2026-82677
valkey
Fixed versions: Not specified
valkey
Fixed versions: Not specified
valkey
Fixed versions: Not specified
Complete source record
{
"id": "f66c6ba117bd49b2ca1ad1f76497e8f3c62245b8bfae47419fbedbdcfc967127",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-82677",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-82677",
"summary": "A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.",
"evidence": "osv:UBUNTU-CVE-2026-82677",
"products": [
{
"name": {
"value": "valkey",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "7.2.5+dfsg1-2ubuntu4~24.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.7+dfsg1-0ubuntu0.24.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.8+dfsg1-0ubuntu0.24.04.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.8+dfsg1-0ubuntu0.24.04.2",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.8+dfsg1-0ubuntu0.24.04.3",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.10+dfsg1-0ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.11+dfsg1-0ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.11+dfsg1-0ubuntu0.2",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.12+dfsg1-0ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.13+dfsg1-0ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.2.13+dfsg1-0ubuntu0.1+esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "valkey",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "9.0.3-0ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "9.0.4-0ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "9.1.1-0ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "9.1.2-0ubuntu1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "valkey",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "8.1.3+dfsg1-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "8.1.4+dfsg1-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "9.0.2-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "9.0.3-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "9.0.3-0ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "9.0.4-0ubuntu0.1",
"evidence": "/affected/2/versions"
},
{
"value": "9.0.4-0ubuntu0.2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "UBUNTU-CVE-2026-82677",
"aliases": [
"UBUNTU-CVE-2026-82677"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "valkey",
"purl": "pkg:deb/ubuntu/valkey?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"7.2.5+dfsg1-2ubuntu4~24.04.1",
"7.2.7+dfsg1-0ubuntu0.24.04.1",
"7.2.8+dfsg1-0ubuntu0.24.04.1",
"7.2.8+dfsg1-0ubuntu0.24.04.2",
"7.2.8+dfsg1-0ubuntu0.24.04.3",
"7.2.10+dfsg1-0ubuntu0.1",
"7.2.11+dfsg1-0ubuntu0.1",
"7.2.11+dfsg1-0ubuntu0.2",
"7.2.12+dfsg1-0ubuntu0.1",
"7.2.13+dfsg1-0ubuntu0.1",
"7.2.13+dfsg1-0ubuntu0.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82677.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "valkey-redis-compat",
"binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
},
{
"binary_name": "valkey-sentinel",
"binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
},
{
"binary_name": "valkey-server",
"binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
},
{
"binary_name": "valkey-tools",
"binary_version": "7.2.13+dfsg1-0ubuntu0.1+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "valkey",
"purl": "pkg:deb/ubuntu/valkey?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"9.0.3-0ubuntu2",
"9.0.4-0ubuntu1",
"9.1.1-0ubuntu2",
"9.1.2-0ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82677.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "valkey-sentinel",
"binary_version": "9.1.2-0ubuntu1"
},
{
"binary_name": "valkey-server",
"binary_version": "9.1.2-0ubuntu1"
},
{
"binary_name": "valkey-tools",
"binary_version": "9.1.2-0ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "valkey",
"purl": "pkg:deb/ubuntu/valkey?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"8.1.3+dfsg1-0ubuntu2",
"8.1.4+dfsg1-0ubuntu1",
"9.0.2-0ubuntu1",
"9.0.3-0ubuntu1",
"9.0.3-0ubuntu2",
"9.0.4-0ubuntu0.1",
"9.0.4-0ubuntu0.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82677.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "valkey-sentinel",
"binary_version": "9.0.4-0ubuntu0.2"
},
{
"binary_name": "valkey-server",
"binary_version": "9.0.4-0ubuntu0.2"
},
{
"binary_name": "valkey-tools",
"binary_version": "9.0.4-0ubuntu0.2"
}
]
}
}
],
"modified": "2026-10-17T13:01:11.574997836Z",
"provider": "osv",
"upstream": [
"CVE-2026-82677"
],
"references": [
"https://ubuntu.com/security/CVE-2026-82677",
"https://www.cve.org/CVERecord?id=CVE-2026-82677",
"https://github.com/user-attachments/files/30118801/PoC.zip",
"https://github.com/valkey-io/valkey/",
"https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7",
"https://github.com/valkey-io/valkey/issues/4200",
"https://github.com/valkey-io/valkey/pull/4211",
"https://vuldb.com/cve/CVE-2026-82677",
"https://vuldb.com/submit/893959",
"https://vuldb.com/vuln/397172",
"https://vuldb.com/vuln/397172/cti"
]
},
"related_cves": [
{
"value": "CVE-2026-82677",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361188,
"published_at": "2026-08-31T10:16:00+00:00"
}