CVE-2025-71267: Linux kernel · fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium · fixed in 6.8.0-1060.63~22.04.1 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 13:47 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.8.0-1060.63~22.04.1, 6.8.0-1063.69~22.04.1, 6.8.0-1060.61~22.04.1 +24
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 18 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 25.10linuxpkg:deb/ubuntu/linux@6.17.0-40.40?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-awspkg:deb/ubuntu/linux-aws@6.17.0-1019.19?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azurepkg:deb/ubuntu/linux-azure@6.17.0-1020.20?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-azure-fdepkg:deb/ubuntu/linux-azure-fde@6.17.0-1017.17?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-gcppkg:deb/ubuntu/linux-gcp@6.17.0-1020.22?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu 25.10linux-oraclepkg:deb/ubuntu/linux-oracle@6.17.0-1018.18?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied to affected Linux kernel versions. The fix adds validation to prevent memory allocation for zero-sized ATTR_LIST attributes, thereby preventing the infinite loop and DoS condition. Users should update to the fixed kernel versions as per the vendor advisory.
Description
A vulnerability in the Linux kernel's ntfs3 file system driver could cause an infinite loop leading to a denial-of-service (DoS) condition. This occurs when a zero-sized ATTR_LIST attribute triggers repeated memory allocation and enumeration cycles, causing the mount operation to hang indefinitely. The issue has been fixed by adding validation to prevent memory allocation when the data size is zero.
References
- ubuntu.com/security/CVE-2025-71267 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-71267 (opens in a new tab)
- git.kernel.org/linus/06909b2549d631a47fcda249d34be26f7ca1711d (opens in a new tab)
- git.kernel.org/stable/c/06909b2549d631a47fcda249d34be26f7ca1711d (opens in a new tab)
- git.kernel.org/stable/c/7ef219656febf5ae06ae56b1fce47ebd05f92b68 (opens in a new tab)
- git.kernel.org/stable/c/8d8c70b57dbeda3eb165c0940b97e85373ca9354 (opens in a new tab)
- git.kernel.org/stable/c/9267d99fade76d44d4a133599524031fe684156e (opens in a new tab)
- git.kernel.org/stable/c/976e6a7c51fabf150478decbe8ef5d9a26039b7c (opens in a new tab)
- git.kernel.org/stable/c/9779a6eaaabdf47aa57910d352b398ad742e6a5f (opens in a new tab)
- git.kernel.org/stable/c/fd508939dbca5eceefb2d0c2564beb15469572f2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8492-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8492-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-8497-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8498-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8499-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8492-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-8492-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-8492-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-8575-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-8576-1 (opens in a new tab)