In the Linux kernel, the following vulnerability has been resolved:

Squashfs: reject negative file sizes in squashfs_read_inode()

Syskaller reports a "WARNING in ovl_copy_up_file" in overlayfs.

This warning is ultimately caused because the underlying Squashfs file
system returns a file with a negative file size.

This commit checks for a negative file size and returns EINVAL.

[phillip@squashfs.org.uk: only need to check 64 bit quantity]

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00024.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Linux
  • Linux Kernel
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/2871c74caa3f4f05b429e6bfefebac62dbf1b408 cve-icon cve-icon
https://git.kernel.org/stable/c/54170057a5fadd24a37b70de41e61d39284d9bd7 cve-icon cve-icon
https://git.kernel.org/stable/c/8118f66124895829443d09c207e654adcb2f9321 cve-icon cve-icon
https://git.kernel.org/stable/c/875fb3f87ae0225b881319ba016a1a8c4ffd5812 cve-icon cve-icon
https://git.kernel.org/stable/c/8c7aad76751816207fee556d44aa88a710824810 cve-icon cve-icon
https://git.kernel.org/stable/c/9f1c14c1de1bdde395f6cc893efa4f80a2ae3b2b cve-icon cve-icon
https://git.kernel.org/stable/c/f271155ff31aca8ef82c61c8df23ca97e9a77dd4 cve-icon cve-icon
https://git.kernel.org/stable/c/fbfc745db628de31f5c089147deeb87e95b89e66 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025111246-CVE-2025-40200-c514@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-40200 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-40200 cve-icon
History

Thu, 13 Nov 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Thu, 13 Nov 2025 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Wed, 12 Nov 2025 22:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: Squashfs: reject negative file sizes in squashfs_read_inode() Syskaller reports a "WARNING in ovl_copy_up_file" in overlayfs. This warning is ultimately caused because the underlying Squashfs file system returns a file with a negative file size. This commit checks for a negative file size and returns EINVAL. [phillip@squashfs.org.uk: only need to check 64 bit quantity]
Title Squashfs: reject negative file sizes in squashfs_read_inode()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-11-12T21:56:33.783Z

Reserved: 2025-04-16T07:20:57.178Z

Link: CVE-2025-40200

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-12T22:15:47.160

Modified: 2025-11-14T16:42:30.503

Link: CVE-2025-40200

cve-icon Redhat

Severity : Low

Publid Date: 2025-11-12T00:00:00Z

Links: CVE-2025-40200 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-11-13T09:52:19Z