CVE-2026-74515

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request to enable interrupt forwarding if its...

CVE-2026-74515 KVM: s390: pci: Reject adapter interrupt forwarding if already enabled

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request to enable interrupt forwarding if its...

CVE-2026-74515

CVE-2026-74515 concerns the Linux kernel, specifically KVM on s390 for PCI (zPCI). The issue arises when enabling adapter interrupt forwarding: the MPCIFC instruction forbids registering interrupts without unregistering first, so a second or repeated enable request for the same device is rejected...

CVE-2026-74514

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

CVE-2026-72292

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Initialize KVMS390GETCMMABITS memory kvms390getcmmabits allocates its output buffer with vmalloc, which does not zero the returned pages: values = vmallocargs-count; In the non-peek migration path, datgetcmma reports a...

CVE-2026-72292 KVM: s390: Initialize KVM_S390_GET_CMMA_BITS memory

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Initialize KVMS390GETCMMABITS memory kvms390getcmmabits allocates its output buffer with vmalloc, which does not zero the returned pages: values = vmallocargs-count; In the non-peek migration path, datgetcmma reports a...

EUVD-2026-59192

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: Add missing radixtreepreload in gaccessshadowfault Add missing radixtreepreload in gaccessshadowfault to guarantee forward progress. The core of gaccessshadowfault has been split into gaccessshadowfault in order ...

CVE-2026-72292

The CVE-2026-72292 issue in the Linux kernel affects KVM on s390 where kvm_s390_get_cmma_bits() allocates its output with vmalloc(), which does not zero pages. In the non-peek migration path, dat_get_cmma() reports a byte span from the first to the last dirty page, but __dat_get_cmma_pte() only w...

CVE-2026-72291

CVE-2026-72291 : In the Linux kernel (KVM for s390), a fix was applied for an unlikely race in try_get_locked_pte() that could occur if puds or pmds are unmapped between p?dp_get() and p?d_offset() calls. The issue affects the page-table handling path and is mitigated by the update; affected comp...

PT-2026-72478

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix GISC refcount leak on AIF enable failure kvm s390 gisc register registers the guest ISC before pinning the guest interrupt forwarding pages and allocating the AISB bit. If any of the later setup steps fails, t...

EUVD-2026-57923

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix handling of AIF enable without AISB When a guest seeks to register IRQs without a summary bit specified, ensure that the associated GAITE then stores 0 for the guest AISB location instead of...

RLSA-2026:49851 Moderate: kernel-rt security, bug fix, and enhancement update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: ipc: limit nextid allocation to the valid ID range CVE-2026-52923 Bug Fixes and Enhancements: Rocky Linux8.10 - KVM: s390: Limit...

RLSA-2026:49857 Moderate: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ipc: limit nextid allocation to the valid ID range CVE-2026-52923 Bug Fixes and Enhancements: Rocky Linux8.10 - KVM: s390: Limit adapter indicator access to mapped page JIRA:Rocky...

kernel security, bug fix, and enhancement update

An update is available for kernel. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The kernel packages contain the Linux kernel, the core of any Linux operating...

kernel security, bug fix, and enhancement update

4.18.0-553.151.1 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list olkmodsigningkey.pem Orabug: 29539237 - Update x509.genkey Orabug: 24817676 - Conflict with shim-ia32 and...

Moderate: Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

CVE-2026-52968

CVE-2026-52968 affects the Linux kernel KVM on s390. The root cause is double-scaling the GAIT table index: code in kvm_s390_pci_aif_enable(), kvm_s390_pci_aif_disable(), and aen_host_forward() multiplies the GAIT index by sizeof(struct zpci_gaite) even though gait is already a pointer to struct ...

CVE-2026-52968

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: fix GAIT table indexing due to double-scaling pointer arithmetic kvms390pciaifenable, kvms390pciaifdisable, and aenhostforward index the GAIT by manually multiplying the index with sizeofstruct zpcigaite. Since...

SUSE 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...

CVE-2025-71155 KVM: s390: Fix gmap_helper_zap_one_page() again

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...