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VulnerabilityPublished Updated

CVE-2025-71266: Linux kernel · fs: ntfs3: check return value of indx_find to avoid infinite loop

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in b0ea441f44ce64fa514a415d4a9e6e2b06e7946c : patch Linux kernel soon.

Data as of 10 Nov 2026, 13:03 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
Patch
Available – fixed in b0ea441f44ce64fa514a415d4a9e6e2b06e7946c, 1732053c8a6b360e2d5afb1b34fe9779398b072c, 435d34719db0e130f6f0c621d67ed524cc1a7d10 +4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < b0ea441f44ce64fa514a415d4a9e6e2b06e7946c
Fixed in
  • b0ea441f44ce64fa514a415d4a9e6e2b06e7946c
LinuxLinuxAffected
  • ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 1732053c8a6b360e2d5afb1b34fe9779398b072c
Fixed in
  • 1732053c8a6b360e2d5afb1b34fe9779398b072c
LinuxLinuxAffected
  • ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 435d34719db0e130f6f0c621d67ed524cc1a7d10
Fixed in
  • 435d34719db0e130f6f0c621d67ed524cc1a7d10
LinuxLinuxAffected
  • ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 398e768d1accd1f5645492ab996005d7aa84a5b0
Fixed in
  • 398e768d1accd1f5645492ab996005d7aa84a5b0
LinuxLinuxAffected
  • ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 68e32694be231c1cdb99b7637a657314e88e1a96
Fixed in
  • 68e32694be231c1cdb99b7637a657314e88e1a96
LinuxLinuxAffected
  • ≥ 82cae269cfa953032fbb8980a7d554d60fb00b17, < 14c3188afbedfd5178bbabb8002487ea14b37b56
Fixed in
  • 14c3188afbedfd5178bbabb8002487ea14b37b56

AI-suggested

A patch is available and has been applied to fix this vulnerability by adding a return value check in the indx_find() function to prevent infinite loops and memory exhaustion. Users should update to the fixed Linux kernel versions or apply the relevant patches. Since this is a kernel-level issue, applying the official fix is the recommended mitigation.

Description

CVE-2025-71266 is a vulnerability in the Linux kernel's ntfs3 filesystem driver that can cause an infinite loop leading to a denial-of-service (DoS) condition. A specially crafted directory entry can trigger the kernel to repeatedly allocate memory without bounds, resulting in an out-of-memory (OOM) crash. The issue arises from the lack of loop detection and depth limits in the indx_find() function when processing malformed INDEX_ENTRY structures. A patch has been released that adds a return value check to prevent this infinite loop and memory exhaustion.

References

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