kernel: KVM: s390: vsie: zero stale crypto bits

A flaw was found in the Linux kernel's KVM s390 Virtual Shared Inter-Partition Emulation VSIE component. When shadowing crypto access bits from a format0 apcb, stale crypto bits were not properly cleared. This oversight could allow a nested guest to potentially access a device that should no long...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Call srcu when importing watchpoint data. The importwpinfo function backs up the original guest memory contents of a watchpoint using readguestabs. This function is equivalent to kvmreadguest, and it resolves the issue...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Rejects adapter interrupt forwarding if it is already enabled. The MPCIFC instruction does not allow registering adapter interrupts without first unregistering them. Therefore, any request to enable interrupt...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fixed memory accounting for pinned/unpinned pages The accountmem and unaccountmem functions call getuid, which increments the reference count of struct userstruct on every invocation. However, we do not decrement...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: KVM: s390 – Fixed an issue where olddata leaks in the guest debug error path. importwpinfo allocates a buffer called olddata per watchpoint, to backup the original guest memory contents. If a subsequent watchpoint of the same...

CVE-2026-89921

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

CVE-2026-89920

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in...

CVE-2026-89922

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Take srcu when importing watchpoint data importwpinfo backs up the original guest memory contents of a watchpoint with readguestabs, which is kvmreadguest and therefore resolves the memslot via kvmmemslots. That requir...

CVE-2026-89925

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory leak in guest debug handling bpdata is freed only for the error case by kfreebpdata. Every successful KVMSETGUESTDEBUG will leak bpdata...

AZL-101664 CVE-2026-89920 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in...

DEBIAN-CVE-2026-89924

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix olddata leak in guest debug error path importwpinfo allocates a per-watchpoint olddata buffer to back up the original guest memory contents. If a later watchpoint of the same KVMSETGUESTDEBUG request fails to impor...

DEBIAN-CVE-2026-89920

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in...

AZL-101535 CVE-2026-89921 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

DEBIAN-CVE-2026-89925

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory leak in guest debug handling bpdata is freed only for the error case by kfreebpdata. Every successful KVMSETGUESTDEBUG will leak bpdata...

DEBIAN-CVE-2026-89923

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Free guest debug data on vcpu destroy kvms390clearbpdata is only called from kvmarchvcpuioctlsetguestdebug, i.e. when user space changes or disables debugging. A vCPU that is destroyed while hardware breakpoints are...

DEBIAN-CVE-2026-89922

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Take srcu when importing watchpoint data importwpinfo backs up the original guest memory contents of a watchpoint with readguestabs, which is kvmreadguest and therefore resolves the memslot via kvmmemslots. That requir...

AZL-101468 CVE-2026-89922 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Take srcu when importing watchpoint data importwpinfo backs up the original guest memory contents of a watchpoint with readguestabs, which is kvmreadguest and therefore resolves the memslot via kvmmemslots. That requir...

DEBIAN-CVE-2026-89921

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

AZL-101538 CVE-2026-89924 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix olddata leak in guest debug error path importwpinfo allocates a per-watchpoint olddata buffer to back up the original guest memory contents. If a later watchpoint of the same KVMSETGUESTDEBUG request fails to impor...

CVE-2026-89926

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix length check importwpinfo struct kvmhwbreakpoint::len is a u64 that is fully controlled by user space. This is then assigned to wpinfo-len, which is an int. The bounds check is done on the truncated value while the...