In the Linux kernel, the following vulnerability has been resolved: iommu/s390: Fix memory corruption when using identity domain zpci_get_iommu_ctrs() returns counter information to be reported as part of device statistics; these counters are stored as part of the s390_domain. The problem, however, is that the identity domain is not backed by an s390_domain and so the conversion via to_s390_domain() yields a bad address that is zero'd initially and read on-demand later via a sysfs read. These counters aren't necessary for the identity domain; just return NULL in this case. This issue was discovered via KASAN with reports that look like: BUG: KASAN: global-out-of-bounds in zpci_fmb_enable_device when using the identity domain for a device on s390.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: iommu/s390: Fix memory corruption when     using identity domain zpci_get_iommu_ctrs() returns counter information to be reported as part of device     statistics; these counters are stored as part of the s390_domain. The problem, however, is that the     identity domain is not backed by an s390_domain and so the conversion via to_s390_domain() yields a bad     address that is zero'd initially and read on-demand later via a sysfs read. These counters aren't     necessary for the identity domain; just return NULL in this case. This issue was discovered via KASAN with     reports that look like: BUG: KASAN: global-out-of-bounds in zpci_fmb_enable_device when using the identity     domain for a device on s390. (CVE-2025-39939)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
347900	SUSE SLED15 / SLES15 : Security update for the Linux Kernel (SUSE-SU-2026:4254-1)	Nessus	SuSE Local Security Checks	Local	high
269388	Linux Distros Unpatched Vulnerability : CVE-2025-39939	Nessus	Misc.	Local	high

Detections

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CVE-2025-39939

high

Tenable Plugins

high

high