CVE-2026-72478
fs/ntfs3: add bounds check to run_get_highest_vcn()
Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: add bounds check to run_get_highest_vcn() run_get_highest_vcn() parses a packed NTFS mapping-pairs buffer without any length bound, relying solely on a 0x00 terminator to stop. A crafted $LogFile UpdateMappingPairs record whose embedded attribute contains mapping-pairs runs without a terminator causes the function to read past the slab allocation, triggering a KASAN slab-out-of-bounds read on mount. The sibling function run_unpack() received an analogous bounds-check in commit b62567bca474 ("ntfs3: add buffer boundary checks to run_unpack()"), but run_get_highest_vcn() was missed. Take a run_buf_size parameter and reject any run header whose payload would extend past the buffer end, mirroring the pattern used by run_unpack(). The caller in fslog.c passes the remaining attribute bytes after the mapping-pairs offset. KASAN report (on mainline v7.1 merge window HEAD): BUG: KASAN: slab-out-of-bounds in run_get_highest_vcn+0x3c0/0x410 Read of size 1 at addr ffff88800e2d5400 by task mount/72 Call Trace: run_get_highest_vcn+0x3c0/0x410 do_action.isra.0+0x3ba8/0x7b50 log_replay+0x9ddd/0x10200 ntfs_loadlog_and_replay+0x4ad/0x610 ntfs_fill_super+0x214a/0x4540
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to include the fix.
- Ensure the NTFS driver includes boundary checks.
- Recompile the kernel if necessary.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72478.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72478 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72478
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72478 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72478 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '425de2aba0d061b3e715d51a3b1992c112ed5b99', 'lessThan': 'c69b9003332917b652175d5fa9d84158c5ed8617', 'versionType': 'git'}, {'status': 'affected', 'version': 'bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9', 'lessThan': '8afc24a884aff6a6f08028bd779ee65c40054455', 'versionType': 'git'}, {'status': 'affected', 'version': 'e64f7dfcaff79e7dfff9121a382dd77f9b462f62', 'lessThan': 'c23083b472a720c3f60b147db05b25b751c7c1bf', 'versionType': 'git'}, {'status': 'affected', 'version': 'd3012690a7065d9ca86521a525ad11e8af491d45', 'lessThan': 'a31893206588374d7d16fad387189d8165c7efd3', 'versionType': 'git'}, {'status': 'affected', 'version': 'b62567bca47408e6739dee75f02a2113548af875', 'lessThan': '41081202eb823f5b27ff164b12010b24428100ad', 'versionType': 'git'}, {'status': 'affected', 'version': 'b62567bca47408e6739dee75f02a2113548af875', 'lessThan': 'bb11485a87fbb2254b62cfed630b699d50e57da8', 'versionType': 'git'}, {'status': 'affected', 'version': 'bbad75336870b51b81979b97613746237fcb02fe', 'versionType': 'git'}, {'status': 'affected', 'version': '41aadf5cb482793a24e05aa136224e179a778586', 'versionType': 'git'}, {'status': 'affected', 'version': '6.1.175', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.140', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.86', 'lessThan': '6.12.97', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.18.27', 'lessThan': '6.18.40', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.209', 'lessThan': '5.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '7.0.4', 'lessThan': '7.1', 'versionType': 'semver'}], 'programFiles': ['fs/ntfs3/fslog.c', 'fs/ntfs3/ntfs_fs.h', 'fs/ntfs3/run.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '7.1', 'versionType': 'semver'}, {'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-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/ntfs3/fslog.c', 'fs/ntfs3/ntfs_fs.h', 'fs/ntfs3/run.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '425de2aba0d061b3e715d51a3b1992c112ed5b99', 'lessThan': 'c69b9003332917b652175d5fa9d84158c5ed8617', 'versionType': 'git'}, {'status': 'affected', 'version': 'bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9', 'lessThan': '8afc24a884aff6a6f08028bd779ee65c40054455', 'versionType': 'git'}, {'status': 'affected', 'version': 'e64f7dfcaff79e7dfff9121a382dd77f9b462f62', 'lessThan': 'c23083b472a720c3f60b147db05b25b751c7c1bf', 'versionType': 'git'}, {'status': 'affected', 'version': 'd3012690a7065d9ca86521a525ad11e8af491d45', 'lessThan': 'a31893206588374d7d16fad387189d8165c7efd3', 'versionType': 'git'}, {'status': 'affected', 'version': 'b62567bca47408e6739dee75f02a2113548af875', 'lessThan': '41081202eb823f5b27ff164b12010b24428100ad', 'versionType': 'git'}, {'status': 'affected', 'version': 'b62567bca47408e6739dee75f02a2113548af875', 'lessThan': 'bb11485a87fbb2254b62cfed630b699d50e57da8', 'versionType': 'git'}, {'status': 'affected', 'version': 'bbad75336870b51b81979b97613746237fcb02fe', 'versionType': 'git'}, {'status': 'affected', 'version': '41aadf5cb482793a24e05aa136224e179a778586', 'versionType': 'git'}, {'status': 'affected', 'version': '6.1.175', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.140', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.86', 'lessThan': '6.12.97', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.18.27', 'lessThan': '6.18.40', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.209', 'lessThan': '5.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '7.0.4', 'lessThan': '7.1', 'versionType': 'semver'}], 'programFiles': ['fs/ntfs3/fslog.c', 'fs/ntfs3/ntfs_fs.h', 'fs/ntfs3/run.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '7.1', 'versionType': 'semver'}, {'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/fslog.c', 'fs/ntfs3/ntfs_fs.h', 'fs/ntfs3/run.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '425de2aba0d061b3e715d51a3b1992c112ed5b99', 'lessThan': 'c69b9003332917b652175d5fa9d84158c5ed8617', 'versionType': 'git'}, {'status': 'affected', 'version': 'bf7ac4a1d3bfc6e56e54635c3d331a68170d37c9', 'lessThan': '8afc24a884aff6a6f08028bd779ee65c40054455', 'versionType': 'git'}, {'status': 'affected', 'version': 'e64f7dfcaff79e7dfff9121a382dd77f9b462f62', 'lessThan': 'c23083b472a720c3f60b147db05b25b751c7c1bf', 'versionType': 'git'}, {'status': 'affected', 'version': 'd3012690a7065d9ca86521a525ad11e8af491d45', 'lessThan': 'a31893206588374d7d16fad387189d8165c7efd3', 'versionType': 'git'}, {'status': 'affected', 'version': 'b62567bca47408e6739dee75f02a2113548af875', 'lessThan': '41081202eb823f5b27ff164b12010b24428100ad', 'versionType': 'git'}, {'status': 'affected', 'version': 'b62567bca47408e6739dee75f02a2113548af875', 'lessThan': 'bb11485a87fbb2254b62cfed630b699d50e57da8', 'versionType': 'git'}, {'status': 'affected', 'version': 'bbad75336870b51b81979b97613746237fcb02fe', 'versionType': 'git'}, {'status': 'affected', 'version': '41aadf5cb482793a24e05aa136224e179a778586', 'versionType': 'git'}, {'status': 'affected', 'version': '6.1.175', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.140', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.12.86', 'lessThan': '6.12.97', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.18.27', 'lessThan': '6.18.40', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.209', 'lessThan': '5.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '7.0.4', 'lessThan': '7.1', 'versionType': 'semver'}], 'programFiles': ['fs/ntfs3/fslog.c', 'fs/ntfs3/ntfs_fs.h', 'fs/ntfs3/run.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '7.1', 'versionType': 'semver'}, {'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-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/ntfs3/fslog.c', 'fs/ntfs3/ntfs_fs.h', 'fs/ntfs3/run.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: add bounds check to run_get_highest_vcn() run_get_highest_vcn() parses a packed NTFS mapping-pairs buffer without any length bound, relying solely on a 0x00 terminator to stop. A crafted $LogFile UpdateMappingPairs record whose embedded attribute contains mapping-pairs runs without a terminator causes the function to read past the slab allocation, triggering a KASAN slab-out-of-bounds read on mount. The sibling function run_unpack() received an analogous bounds-check in commit b62567bca474 ("ntfs3: add buffer boundary checks to run_unpack()"), but run_get_highest_vcn() was missed. Take a run_buf_size parameter and reject any run header whose payload would extend past the buffer end, mirroring the pattern used by run_unpack(). The caller in fslog.c passes the remaining attribute bytes after the mapping-pairs offset. KASAN report (on mainline v7.1 merge window HEAD): BUG: KASAN: slab-out-of-bounds in run_get_highest_vcn+0x3c0/0x410 Read of size 1 at addr ffff88800e2d5400 by task mount/72 Call Trace: run_get_highest_vcn+0x3c0/0x410 do_action.isra.0+0x3ba8/0x7b50 log_replay+0x9ddd/0x10200 ntfs_loadlog_and_replay+0x4ad/0x610 ntfs_fill_super+0x214a/0x4540 Added Reference https://git.kernel.org/stable/c/41081202eb823f5b27ff164b12010b24428100ad Added Reference https://git.kernel.org/stable/c/8afc24a884aff6a6f08028bd779ee65c40054455 Added Reference https://git.kernel.org/stable/c/a31893206588374d7d16fad387189d8165c7efd3 Added Reference https://git.kernel.org/stable/c/bb11485a87fbb2254b62cfed630b699d50e57da8 Added Reference https://git.kernel.org/stable/c/c23083b472a720c3f60b147db05b25b751c7c1bf Added Reference https://git.kernel.org/stable/c/c69b9003332917b652175d5fa9d84158c5ed8617