MediumFix available
linux — security advisory
In the Linux kernel, the following vulnerability has been resolved: bcache: fix variable length array abuse in btree_iter btree_iter is used in two ways: either allocated on the stack with a fixed size MAX_BSETS, or from a mempool with a dynamic size based on the specific cache set. Previously, the struct had a fixed-length array of size MAX_BSETS which was indexed out-of-bounds for the dynamically-sized iterators, which causes UBSAN to complain. This patch uses the same approach as in bcachefs's sort_iter and splits the iterator into a btree_iter with a flexible array member and a btree_iter_stack which embeds a btree_iter as well as a fixed-length data array.
- Products
- linux
- Affected versions
- 6.1.27-1, 6.1.37-1, 6.1.38-1, 6.1.38-2, 6.1.38-2~bpo11+1, 6.1.38-3, 6.1.38-4, 6.1.38-4~bpo11+1, 6.1.52-1, 6.1.55-1, 6.1.55-1~bpo11+1, 6.1.64-1, 6.1.66-1, 6.1.67-1, 6.1.69-1, 6.1.69-1~bpo11+1, 6.1.76-1, 6.1.76-1~bpo11+1, 6.1.82-1, 6.1.85-1, 6.1.90-1, 6.1.90-1~bpo11+1, 6.1.94-1~bpo11+1
- Fixed versions
- 6.1.94-1, 6.9.7-1
- CVEs
- CVE-2024-39482
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 16:27 UTC · Revision 1
Source evidence
In the Linux kernel, the following vulnerability has been resolved: bcache: fix variable length array abuse in btree_iter btree_iter is used in two ways: either allocated on the stack with a fixed size MAX_BSETS, or from a mempool with a dynamic size based on the specific cache set. Previously, the struct had a fixed-length array of size MAX_BSETS which was indexed out-of-bounds for the dynamically-sized iterators, which causes UBSAN to complain. This patch uses the same approach as in bcachefs's sort_iter and splits the iterator into a btree_iter with a flexible array member and a btree_iter_stack which embeds a btree_iter as well as a fixed-length data array.
osv:DEBIAN-CVE-2024-39482
linux
Fixed versions: 6.1.94-1
linux
Fixed versions: 6.9.7-1
linux
Fixed versions: 6.9.7-1
Complete source record
{
"id": "c10e3518ef09f17fd5b2c8bd7ed3b15811238c4911c137beded6255cd80c742f",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2024-39482",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2024-39482",
"summary": "In the Linux kernel, the following vulnerability has been resolved: bcache: fix variable length array abuse in btree_iter btree_iter is used in two ways: either allocated on the stack with a fixed size MAX_BSETS, or from a mempool with a dynamic size based on the specific cache set. Previously, the struct had a fixed-length array of size MAX_BSETS which was indexed out-of-bounds for the dynamically-sized iterators, which causes UBSAN to complain. This patch uses the same approach as in bcachefs's sort_iter and splits the iterator into a btree_iter with a flexible array member and a btree_iter_stack which embeds a btree_iter as well as a fixed-length data array.",
"evidence": "osv:DEBIAN-CVE-2024-39482",
"products": [
{
"name": {
"value": "linux",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.1.94-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "6.1.27-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.37-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-2",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-2~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-3",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-4",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.38-4~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.52-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.55-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.55-1~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.64-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.66-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.67-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.69-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.69-1~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.76-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.76-1~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.82-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.85-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.90-1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.90-1~bpo11+1",
"evidence": "/affected/0/versions"
},
{
"value": "6.1.94-1~bpo11+1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "linux",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.9.7-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "linux",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.9.7-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2024-39482",
"aliases": [
"DEBIAN-CVE-2024-39482"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.1.94-1"
}
]
}
],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"6.1.27-1",
"6.1.37-1",
"6.1.38-1",
"6.1.38-2",
"6.1.38-2~bpo11+1",
"6.1.38-3",
"6.1.38-4",
"6.1.38-4~bpo11+1",
"6.1.52-1",
"6.1.55-1",
"6.1.55-1~bpo11+1",
"6.1.64-1",
"6.1.66-1",
"6.1.67-1",
"6.1.69-1",
"6.1.69-1~bpo11+1",
"6.1.76-1",
"6.1.76-1~bpo11+1",
"6.1.82-1",
"6.1.85-1",
"6.1.90-1",
"6.1.90-1~bpo11+1",
"6.1.94-1~bpo11+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-39482.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.9.7-1"
}
]
}
],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-39482.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.9.7-1"
}
]
}
],
"package": {
"name": "linux",
"purl": "pkg:deb/debian/linux?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2024-39482.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T09:47:32.655239773Z",
"provider": "osv",
"upstream": [
"CVE-2024-39482"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2024-39482"
]
},
"related_cves": [
{
"value": "CVE-2024-39482",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 327658,
"published_at": "2024-07-05T07:15:10.71+00:00"
}