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TI-2025-26739 Aliases CVE-2025-40067GHSA-rxpf-8w5h-7fch

fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist

Priority LOW 33Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: reject index allocation if $BITMAP is empty but blocks exist Index allocation requires at least one bit in the $BITMAP attribute to track usage of index entries. If the bitmap is empty while index blocks are already present, this reflects on-disk corruption. syzbot triggered this condition using a malformed NTFS image. During a rename() operation involving a long filename (which spans multiple index entries), the empty bitmap allowed the name to be added without valid tracking. Subsequent deletion of the original entry failed with -ENOENT, due to unexpected index state. Reject such cases by verifying that the bitmap is not empty when index blocks exist.

Why it matters now

EPSS 0.00164 5th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.6.112, 6.12.53, 6.16 +3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.6.102 to before 6.6.112; 6.12.42 to before 6.12.53; 6.15.10 to before 6.16; 6.16.1 to before 6.176.6.112, 6.12.53, 6.16, 6.17Patch availableCNA
LinuxLinux6.17 and later6.6.112, 6.12.53, 6.17.3, 6.18Patch availableCNA
  • Linux VendorLinux Affected 6.6.102 to before 6.6.112; 6.12.42 to before 6.12.53; 6.15.10 to before 6.16; 6.16.1 to before 6.17 Fixed in 6.6.112, 6.12.53, 6.16, 6.17 Patch available CNA
  • Linux VendorLinux Affected 6.17 and later Fixed in 6.6.112, 6.12.53, 6.17.3, 6.18 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.6.112, 6.12.53, 6.16, 6.17
  • Fix · CNA Linux (Linux) Fixed in 6.6.112, 6.12.53, 6.17.3, 6.18

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-40067
  2. 2026-10-03 Alias added: GHSA-rxpf-8w5h-7fch
  3. 2026-10-30 Fix available: Linux/Linux@aab2e34b139f6df71ab2b1adeec9927c206adc79 · CNA
  4. 2026-10-30 1 new reference · CNA
  5. 2026-11-07 Affected versions changed · Red Hat

References

Other 5

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
See all 21741 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences