CVE-2026-31568

A flaw was found in the Linux kernel. This vulnerability, located in the s390/mm component, is due to missing secure storage access fixups for memory donated to the Ultravisor. When secure storage access exceptions occur for such memory, the kernel can enter an unresolvable loop. This can lead to...

CVE-2026-31568

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Add missing secure storage access fixups for donated memory There are special cases where secure storage access exceptions happen in a kernel context for pages that don't have the PGarch1 bit set. That bit is set for...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005011)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005011 advisory. In the Linux kernel, the following vulnerability has been resolved: crypto: s390/aes - Fix buffer overread in CTR mode When processing the last block, the s390 ctr...

CVE-2025-71155

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix gmaphelperzaponepage again A few checks were missing in gmaphelperzaponepage, which can lead to memory corruption in the guest under specific circumstances. Add the missing checks...

UBUNTU-CVE-2025-68751

In the Linux kernel, the following vulnerability has been resolved: s390/fpu: Fix false-positive kmsan report in fpuvstl A false-positive kmsan report is detected when running ping command. An inline assembly instruction 'vstl' can write varied amount of bytes depending on value of 'index'...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992979)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992979 advisory. In the Linux kernel, the following vulnerability has been resolved: s390: fix double free of GS and RI CBs on fork failure The pointers for guarded storage and runti...

UBUNTU-CVE-2023-53746

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: fix memory leak in vfioap device driver The device release callback function invoked to release the matrix device uses the devgetdrvdatadevice dev function to retrieve the pointer to the vfiomatrixdev object in orde...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990638)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990638 advisory. In the Linux kernel, the following vulnerability has been resolved: s390/ap: Fix crash in AP internal function modifybitmap A system crash like this Failing address:...

CVE-2023-53702

CVE-2023-53702 concerns the s390 ChaCha20 vector-accelerator path in the Linux kernel. The ChaCha20 library interface added in commit 349d03ffd5f6 allows using assembler vector instructions when available, but a MACHINE_HAS_VX check was not added, causing a crash if vector facilities are absent (...

iommu/s390: Make attach succeed when the device was surprise removed

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EUVD-2025-33325

In the Linux kernel, the following vulnerability has been resolved: iommu/s390: Make attach succeed when the device was surprise removed When a PCI device is removed with surprise hotplug, there may still be attempts to attach the device to the default domain as part of tear down via...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986602)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-986602 advisory. In the Linux kernel, the following vulnerability has been resolved: s390/ap: Fix crash in AP internal function modifybitmap A system crash like this Failing address:...

CVE-2023-53568 s390/zcrypt: don't leak memory if dev_set_name() fails

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: don't leak memory if devsetname fails When devsetname fails, zcdncreate doesn't free the newly allocated resources. Do it...

CVE-2025-39726

In the Linux kernel, the following vulnerability has been resolved: s390/ism: fix concurrency management in ismcmd The s390x ISM device data sheet clearly states that only one request-response sequence is allowable per ISM function at any point in time. Unfortunately as of today the s390/ism driv...

CVE-2025-39694

In the Linux kernel, the following vulnerability has been resolved: s390/sclp: Fix SCCB present check Tracing code called by the SCLP interrupt handler contains early exits if the SCCB address associated with an interrupt is NULL. This check is performed after physical to virtual address...

kvm: s390: Reject memory region operations for ucontrol VMs

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kernel: s390/ptrace: handle setting of fpc register correctly

In the Linux kernel, the following vulnerability has been resolved: s390/ptrace: handle setting of fpc register correctly If the content of the floating point control fpc register of a traced process is modified with the ptrace interface the new value is tested for validity by temporarily loading...

Linux Distros Unpatched Vulnerability : CVE-2024-57923

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: btrfs: zlib: fix availin bytes for s390 zlib HW compression path Since the input data length...

Linux Distros Unpatched Vulnerability : CVE-2024-41021

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: s390/mm: Fix VMFAULTHWPOISON handling in doexception There is no support for HWPOISON,...

Linux Distros Unpatched Vulnerability : CVE-2022-49804

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: s390: avoid using global register for currentstackpointer Commit 30de14b1884b s390:...