PT-2025-36320 · Linux+4 · Linux Kernel+4
Aliaksei
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Published
2025-01-01
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Updated
2026-04-20
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CVE-2025-39726
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel’s s390/ism driver did not properly manage concurrency in the
ism cmd() function, failing to adhere to the s390x ISM device data sheet’s requirement of allowing only one request-response sequence per ISM function at a time. This lack of synchronization allowed commands to be corrupted by concurrent access from multiple CPUs, potentially leading to invalid DMA and PCI errors (PEC 2 and PEC 3A). This can cause ISM functions to enter an error state, breaking connections and preventing the device from being considered for future requests.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Race Condition
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Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu