UBUNTU-CVE-2026-41257 (CVE-2026-41257)
Vulnerability from osv_ubuntu – Published: 2026-05-11 18:16 – Updated: 2026-06-24 04:28 – Source website
VLAI
Details
jq is a command-line JSON processor. In 1.8.1 and earlier, the jq bytecode VM's data stack tracks its allocation size in a signed int. When the stack grows beyond ≈1 GiB (via deeply nested generator forks), the doubling arithmetic overflows. The wrapped value is passed to realloc and then used for a memmove with attacker-influenced offsets.
Severity
5.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.3-1.1ubuntu1.1+esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.3-1.1ubuntu1.1+esm4?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.2-8",
"1.3-1",
"1.3-1.1ubuntu1",
"1.3-1.1ubuntu1.1",
"1.3-1.1ubuntu1.1+esm3",
"1.3-1.1ubuntu1.1+esm4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.5+dfsg-1ubuntu0.1+esm4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.5+dfsg-1ubuntu0.1+esm4?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4-2.1",
"1.5+dfsg-1",
"1.5+dfsg-1ubuntu0.1",
"1.5+dfsg-1ubuntu0.1+esm2",
"1.5+dfsg-1ubuntu0.1+esm3",
"1.5+dfsg-1ubuntu0.1+esm4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.5+dfsg-2ubuntu0.1~esm3"
},
{
"binary_name": "libjq1",
"binary_version": "1.5+dfsg-2ubuntu0.1~esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.5+dfsg-2ubuntu0.1~esm3?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.5+dfsg-2",
"1.5+dfsg-2ubuntu0.1~esm1",
"1.5+dfsg-2ubuntu0.1~esm2",
"1.5+dfsg-2ubuntu0.1~esm3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.6-1ubuntu0.20.04.1+esm3"
},
{
"binary_name": "libjq1",
"binary_version": "1.6-1ubuntu0.20.04.1+esm3"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.6-1ubuntu0.20.04.1+esm3?arch=source\u0026distro=esm-infra/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.5+dfsg-2build1",
"1.6-1",
"1.6-1ubuntu0.20.04.1",
"1.6-1ubuntu0.20.04.1+esm1",
"1.6-1ubuntu0.20.04.1+esm2",
"1.6-1ubuntu0.20.04.1+esm3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.6-2.1ubuntu3.2"
},
{
"binary_name": "libjq1",
"binary_version": "1.6-2.1ubuntu3.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.6-2.1ubuntu3.2?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6-2.1ubuntu2",
"1.6-2.1ubuntu3",
"1.6-2.1ubuntu3.1",
"1.6-2.1ubuntu3.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.7.1-3ubuntu0.24.04.2"
},
{
"binary_name": "libjq1",
"binary_version": "1.7.1-3ubuntu0.24.04.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.7.1-3ubuntu0.24.04.2?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.6-3",
"1.7-1",
"1.7.1-2",
"1.7.1-3",
"1.7.1-3build1",
"1.7.1-3ubuntu0.24.04.1",
"1.7.1-3ubuntu0.24.04.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.8.1-3ubuntu1.1"
},
{
"binary_name": "libjq1",
"binary_version": "1.8.1-3ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.8.1-3ubuntu1.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.7.1-3ubuntu1",
"1.7.1-6ubuntu1",
"1.8.1-3ubuntu1",
"1.8.1-3ubuntu1.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "jq",
"binary_version": "1.8.1-4ubuntu2"
},
{
"binary_name": "libjq1",
"binary_version": "1.8.1-4ubuntu2"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "jq",
"purl": "pkg:deb/ubuntu/jq@1.8.1-4ubuntu2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.8.1-3ubuntu1",
"1.8.1-4ubuntu1",
"1.8.1-4ubuntu2"
]
}
],
"aliases": [],
"details": "jq is a command-line JSON processor. In 1.8.1 and earlier, the jq bytecode VM\u0027s data stack tracks its allocation size in a signed int. When the stack grows beyond \u22481 GiB (via deeply nested generator forks), the doubling arithmetic overflows. The wrapped value is passed to realloc and then used for a memmove with attacker-influenced offsets.",
"id": "UBUNTU-CVE-2026-41257",
"modified": "2026-06-24T04:28:18Z",
"published": "2026-05-11T18:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-41257"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-41257"
},
{
"type": "REPORT",
"url": "https://github.com/jqlang/jq/security/advisories/GHSA-4jm8-m363-4539"
},
{
"type": "REPORT",
"url": "https://github.com/jqlang/jq/commit/01b3cded76daacbfddb7f8763700b0803bcb5c6f"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-41257"
]
}
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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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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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.
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