PT-2025-51727 · Linux+3 · Linux Kernel+3

Published 2025-08-20 · Updated 2026-05-07 · CVE-2025-68315

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:A/AC:H/Au:S/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel's f2fs file system related to the detection of potentially corrupted node IDs (nid) within the free nid list. Specifically, the issue involves a scenario where the on-disk footer.ino and footer.nid are identical and out of range. The fix introduces a sanity check within the f2fs alloc nid() function to identify potential corruption in the free nid list.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

BDU:2026-01361

CVE-2025-68315

ECHO-71A7-825D-0ED3

OESA-2026-1862

OESA-2026-1863

OESA-2026-1864

OESA-2026-1865

USN-8029-1

USN-8029-2

USN-8029-3

USN-8030-1

USN-8048-1

USN-8095-1

USN-8095-2

USN-8095-3

USN-8095-4

USN-8095-5

USN-8100-1

USN-8125-1

USN-8126-1

USN-8165-1

USN-8261-1

Affected Products

Debian

Linuxmint

Linux Kernel

Ubuntu

References · 1629

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68315.json · Exploit
• https://ubuntu.com/security/CVE-2025-40269 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38055 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40092 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21833 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39788 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40030 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38251 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23300 · Security Note
• https://ubuntu.com/security/CVE-2025-68319 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38543 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40098 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38702 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8030-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-40359 · Vendor Advisory