fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow indx_find_buffer() recursively descends the B+ tree index with no depth limit. A crafted NTFS image with circular index node references causes unbounded recursion, overflowing the kernel stack and panicking the system. This is reachable by mounting a malicious NTFS filesystem (e.g. from a USB drive via desktop automount) and deleting a file whose index entry triggers the rebalancing fallback path in indx_delete_entry(). Add a depth parameter and bail out with -EINVAL when it reaches the fnd->nodes array bound, matching the constraint already enforced by fnd_push() in indx_find(). The related function indx_find() was previously patched for a similar infinite-loop issue (commit 1732053c8a6b), but indx_find_buffer() was missed.
CVE-2026-72194
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-2026-72194
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": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "99031d4f63c785d2a985b6a4c64c4256f7117052",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "65357a81f64cb3fbe13b4b937586755e4b3a072f",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "96fb64f9da86fd2dbd78fbe9d9e41ae27e12ce34",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "78612f478f9fadcec4f9b3b089970da67ffb47e9",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "908c9243ba309997b73cbda3e4c563d0fb345ee9",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "fdf50c788e0991e42a187ff75479a0df7fb752f1",
"versionType": "git"
},
{
"status": "affected",
"version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
"lessThan": "1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd",
"versionType": "git"
}
],
"programFiles": [
"fs/ntfs3/index.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": "5.15.212",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/ntfs3/index.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72194
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #32970 · Revision 1
- Added to Heist Feed
- Publisher date