CVE-2025-39743 is a high-severity vulnerability in the Linux kernel's JFS filesystem, affecting Debian and other Linux distributions. It arises from improper handling of inode pages when a hard link count reaches zero, leading to a bugon trigger during clear_inode() execution. With a CVSS score of 7.8, this local vulnerability allows an attacker with low privileges to achieve high confidentiality, integrity, and availability impacts. While no active exploits, Metasploit modules, or Nuclei templates are publicly available, the vulnerability has garnered significant community discussion and media coverage, indicating a high level of awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.6.14, < 5.4.297CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.5, < 5.10.241CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.11, < 5.15.190CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.16, < 6.1.149CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 6.2, < 6.6.103CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
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