CVE-2025-39939 is a memory corruption vulnerability affecting the Linux kernel, specifically within the s390 IOMMU subsystem when using an identity domain. This flaw, categorized as CWE-787, can lead to out-of-bounds access due to incorrect handling of counter information for identity domains, which lack the expected s390_domain structure. With a CVSS score of 7.8 (High), a local attacker with low privileges could exploit this to achieve high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 6.15, < 6.16.9CPE 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:*:*:*:*:*:* | ||
6.17CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* | ||
6.17CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* |
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.
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.