fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST
In the Linux kernel, the following vulnerability has been resolved: fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed NTFS image can cause an infinite loop when an ATTR_LIST attribute indicates a zero data size while the driver allocates memory for it. When ntfs_load_attr_list() processes a resident ATTR_LIST with data_size set to zero, it still allocates memory because of al_aligned(0). This creates an inconsistent state where ni->attr_list.size is zero, but ni->attr_list.le is non-null. This causes ni_enum_attr_ex to incorrectly assume that no attribute list exists and enumerates only the primary MFT record. When it finds ATTR_LIST, the code reloads it and restarts the enumeration, repeating indefinitely. The mount operation never completes, hanging the kernel thread. This patch adds validation to ensure that data_size is non-zero before memory allocation. When a zero-sized ATTR_LIST is detected, the function returns -EINVAL, preventing a DoS vulnerability.
CVE-2025-71267
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-71267
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
"lessThan": "9267d99fade76d44d4a133599524031fe684156e",
"versionType": "git"
},
{
"status": "affected",
"version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
"lessThan": "976e6a7c51fabf150478decbe8ef5d9a26039b7c",
"versionType": "git"
},
{
"status": "affected",
"version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
"lessThan": "8d8c70b57dbeda3eb165c0940b97e85373ca9354",
"versionType": "git"
},
{
"status": "affected",
"version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
"lessThan": "7ef219656febf5ae06ae56b1fce47ebd05f92b68",
"versionType": "git"
},
{
"status": "affected",
"version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
"lessThan": "9779a6eaaabdf47aa57910d352b398ad742e6a5f",
"versionType": "git"
},
{
"status": "affected",
"version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
"lessThan": "fd508939dbca5eceefb2d0c2564beb15469572f2",
"versionType": "git"
},
{
"status": "affected",
"version": "be71b5cba2e6485e8959da7a9f9a44461a1bb074",
"lessThan": "06909b2549d631a47fcda249d34be26f7ca1711d",
"versionType": "git"
}
],
"programFiles": [
"fs/ntfs3/attrlist.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.202",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.165",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.128",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.16",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.6",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/ntfs3/attrlist.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-71267
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #27153 · Revision 1
- Added to Heist Feed
- Publisher date