CVE-2026-89960

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: fix stale pqaphook pointer on error in vfioapmdevsetkvm In vfioapmdevsetkvm, kvm-arch.crypto.pqaphook is set to &matrixmdev-pqaphook before the update locks are acquired and the mdev list is checked for a conflictin...

EUVD-2026-80560

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: fix stale pqaphook pointer on error in vfioapmdevsetkvm In vfioapmdevsetkvm, kvm-arch.crypto.pqaphook is set to &matrixmdev-pqaphook before the update locks are acquired and the mdev list is checked for a conflictin...

CVE-2026-89960

CVE-2026-89960 is a use-after-free in the Linux kernel's s390 vfio-ap (Protected Crypto Accelerator) subsystem. In vfio_ap_mdev_set_kvm(), the kvm->arch.crypto.pqap_hook pointer is set before checking for a conflicting mdev assignment. If another mdev already owns the KVM instance, the functio...

EUVD-2026-80559

In the Linux kernel, the following vulnerability has been resolved: s390/vfio-ap: Fix control domain removal in vfioapmdevcfgremove The vfioapconfigremove function uses the bitmapandnot function to clear bits from the matrixmdev-matrix.adm bitmap specifies the control domains assigned to the mdev...

CVE-2026-89957

CVE-2026-89957 affects the Linux kernel s390 vfio-ap driver. In vfio_ap_mdev_hot_unplug_cfg(), the return value of bitmap_andnot() is used to decide whether the guest APCB needs updating. When the last AP adapter or domain assigned to an mdev is removed, the resulting empty bitmap causes bitmap_a...

CVE-2026-89955

A NULL pointer dereference vulnerability exists in the Linux kernel's s390/vfio-ap module. The race occurs when vfio_ap_mdev_probe_queue() creates the sysfs attribute group before the queue's driver data is set; a concurrent read of the status attribute then retrieves NULL via dev_get_drvdata() a...

CVE-2026-89956

CVE-2026-89956 affects the s390/vfio-ap subsystem of the Linux kernel. The root cause is a missing matrix_dev->guests_lock mutex when traversing or modifying the mdev_list of ap_matrix_mdev objects. Two functions are affected: vfio_ap_mdev_probe , which added objects to the list using the wron...

EUVD-2026-66469

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Limit the number of channel program segments The processing of channel programs, and the CCWs within them, is done recursively. As such, there is an arbitrary but not architectural limit to the number of CCWs that c...

AZL-97772 CVE-2026-80554 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Limit the number of channel program segments The processing of channel programs, and the CCWs within them, is done recursively. As such, there is an arbitrary but not architectural limit to the number of CCWs that c...

CVE-2026-80554

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Limit the number of channel program segments The processing of channel programs, and the CCWs within them, is done recursively. As such, there is an arbitrary but not architectural limit to the number of CCWs that c...

CVE-2026-80551

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Ensure first IDAW remains constant The first IDAW in a list does not need to be on a 2K/4K boundary like all others, and so is read separately to accurately calculate the size of the buffer needed to read the full...

CVE-2026-80554 s390/vfio_ccw: Limit the number of channel program segments

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Limit the number of channel program segments The processing of channel programs, and the CCWs within them, is done recursively. As such, there is an arbitrary but not architectural limit to the number of CCWs that c...

CVE-2026-80551 s390/vfio_ccw: Ensure first IDAW remains constant

In the Linux kernel, the following vulnerability has been resolved: s390/vfioccw: Ensure first IDAW remains constant The first IDAW in a list does not need to be on a 2K/4K boundary like all others, and so is read separately to accurately calculate the size of the buffer needed to read the full...

PT-2026-82163

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390/vfio ccw component where the CRW region, which relies exclusively on asynchronous events from hardware, lacks a proper locking mechanism. This necessitates th...

PT-2026-82165

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the fsm notoper function within the s390/vfio ccw component. This routine is triggered when a device is lost and is no longer operational. Because this process can occ...

PT-2026-82168

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390/vfio ccw component where the system failed to properly clamp the index for read/write regions to the range of the capabilities. While the capability chain...

PT-2026-82170

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390/vfio ccw component where channel programs and their contained Command Chain Words CCWs are processed recursively. The vfio-ccw logic divides these channel...

PT-2026-82166

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds check exists in the ccwchain calc length function. This routine counts the number of channel command words CCWs chained together in a single channel program and is...

PT-2026-82169

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the s390/vfio ccw component where the io work and crw work workqueues were not properly un-initialized. This could allow work to be dispatched after the private...

PT-2026-82171

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the s390/vfio ccw component when the cp init function fails. While the cp free routine is used to unpin or free memory after successful I/O or when cp prefetch...