High
Security advisory
An integer overflow in ext4fs_read_symlink in Das U-Boot before 2025.01-rc1 occurs for zalloc (adding one to an le32 variable) via a crafted ext4 filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-57256
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 20:37 UTC · Revision 1
Source evidence
An integer overflow in ext4fs_read_symlink in Das U-Boot before 2025.01-rc1 occurs for zalloc (adding one to an le32 variable) via a crafted ext4 filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite.
osv:CVE-2024-57256
Complete source record
{
"id": "a6a4363676f63767815b5d983f20300b10f282a3fb5ac3b94e58ba4c7646768e",
"url": "https://osv.dev/vulnerability/CVE-2024-57256",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2024-57256",
"summary": "An integer overflow in ext4fs_read_symlink in Das U-Boot before 2025.01-rc1 occurs for zalloc (adding one to an le32 variable) via a crafted ext4 filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite.",
"evidence": "osv:CVE-2024-57256",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2024-57256",
"aliases": [
"CVE-2024-57256"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/u-boot/u-boot",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "f919c3a889f0ec7d63a48b5d0ed064386b0980bd"
}
],
"database_specific": {
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{
"cpe": "cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2024.10"
}
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"source": "CPE_RANGE"
}
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}
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57256.json"
}
}
],
"modified": "2026-10-28T02:30:39.075548695Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-577017.html",
"https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html",
"https://source.denx.de/u-boot/u-boot/-/commit/35f75d2a46e5859138c83a75cd2f4141c5479ab9",
"https://www.openwall.com/lists/oss-security/2025/02/17/2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57256.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-57256"
],
"provider_metadata": {
"cwe_ids": [
"CWE-190"
],
"cna_assigner": "mitre",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"fixed": "2025.01-rc1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57256.json"
}
},
"related_cves": [
{
"value": "CVE-2024-57256",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 506757,
"published_at": "2025-02-18T00:00:00+00:00"
}