CVE-2025-39717 is a high-severity vulnerability in the Linux kernel affecting the open_tree_attr(2) system call. It allows a local attacker to bypass intended restrictions and change id-mappings on detached, but visible, mounts without the necessary OPEN_TREE_CLONE flag. This flaw, stemming from a bug in a previous commit, could lead to use-after-free (UAF) and locking issues. With a CVSS score of 7.8, the vulnerability has a high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 6.15, < 6.16.4CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
6.17CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* | ||
6.17CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* |
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
No social media mentions found for this CVE.
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No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.