CVE-2025-39966 — Race Condition in Linux
Severity
7.0HIGHNVD
EPSS
0.0%
top 99.00%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 15
Description
In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix race during abort for file descriptors
fput() doesn't actually call file_operations release() synchronously, it
puts the file on a work queue and it will be released eventually.
This is normally fine, except for iommufd the file and the iommufd_object
are tied to gether. The file has the object as it's private_data and holds
a users refcount, while the object is expected to remain alive as long as
the file is.
W…
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9
Affected Packages4 packages
▶CVEListV5linux/linux07838f7fd529c8a6de44b601d4b7057e6c8d36ed — 17195a7d754a5c6a31888702ca93f6f08f3383ad+3
Patches
🔴Vulnerability Details
2OSV▶
CVE-2025-39966: In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix race during abort for file descriptors fput() doesn't actually call f↗2025-10-15
GHSA▶
GHSA-jrgc-8xmv-4r2m: In the Linux kernel, the following vulnerability has been resolved:
iommufd: Fix race during abort for file descriptors
fput() doesn't actually call↗2025-10-15