Double Free in Linux
CVE-2025-38411
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix double put of request If a netfs request finishes during the pause loop, it will have the ref that belongs to the IN_PROGRESS flag removed at that point - however, if it then goes to the final wait loop, that will *also* put the ref because it sees that the IN_PROGRESS flag is clear and incorrectly assumes that this happened when it called the collector. In fact, since IN_PROGRESS is clear, we shouldn't call the collector again since it's done all the cleanup, such as calling ->ki_complete(). Fix this by making netfs_collect_in_app() just return, indicating that we're done if IN_PROGRESS is removed.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Linux — versions 329ba1cb402ac328224965b8fc7a554a5150908e, 2b1424cd131cfaba4cf7040473133d26cddac088, 6.15.3
- Linux Kernel — versions 6.16
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-38411?
- CVE-2025-38411 is a critical-severity vulnerability in Linux, classified under Double Free. CVSS score: 9.8/10. Published 2025-07-25.
- How severe is CVE-2025-38411?
- Critical severity. CVSS v3 base score is 9.8 out of 10.