CVE-2026-53117

A flaw was found in the Linux kernel, specifically within the s390/cio component. When a driver is being probed, a race condition can occur where the driveroverride field is accessed without proper locking. This can lead to a Use-After-Free UAF vulnerability, which may result in system instabilit...

CVE-2026-52968

A flaw was found in the Linux kernel's KVM Kernel-based Virtual Machine subsystem, specifically affecting s390 PCI devices. This vulnerability arises from incorrect pointer arithmetic during the indexing of the Guest Access Instruction Table GAIT, leading to out-of-bounds memory access. A local...

CVE-2026-53116

A flaw was found in the Linux kernel's s390/ap driver. A race condition occurs when AP masks are updated, leading to aprevisereserved accessing the driveroverride field without proper locking. This can result in a Use-After-Free UAF vulnerability, where memory is accessed after it has been freed...

EUVD-2026-38836

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...

EUVD-2026-38985

In the Linux kernel, the following vulnerability has been resolved: s390/cio: use generic driveroverride infrastructure When a driver is probed through driverattach, the bus' match callback is called without the device lock held, thus accessing the driveroverride field without a lock, which can...

CVE-2026-53117

The CVE-2026-53117 issue affects the Linux kernel (s390/cio). During driver probing in __driver_attach(), the bus match() callback can access the driver_override field without the required device lock, creating a potential use-after-free. The fix switches to the driver-core driver_override infras...

EUVD-2026-38984

In the Linux kernel, the following vulnerability has been resolved: s390/ap: use generic driveroverride infrastructure When the AP masks are updated via apmaskstore or aqmaskstore, apbusrevisebindings is called after apattrmutex has been released. This calls aprevisereserved, which accesses the...

CVE-2026-53116

CVE-2026-53116 affects the Linux kernel s390/ap subsystem. The vulnerability arises when AP masks are updated via apmask_store() or aqmask_store(): ap_bus_revise_bindings() runs after ap_attr_mutex is released and __ap_revise_reserved() accesses driver_override without a lock, racing with driver_...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: fixed the issue of double module refcount decrementation. Once the discipline is associated with the device, deleting the device will cause the module’s refcount to be decreased. Performing this operation manually alon...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Added a spectre boundary for the syscall dispatch table. The s390 syscall number is directly controlled by the user space, but there is no arrayindexnospec boundary to prevent access beyond the syscall function...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: s390/netiucv: Fixed the return type of netiucvtx With Clang’s Kernel Control Flow Integrity kCFI, CONFIGCFICLANG feature, indirect call targets are validated against the expected function pointer prototype to ensure that the call...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: s390/crypto: Use vector instructions only if they are available for ChaCha20. Commit 349d03ffd5f6 “crypto: s390 – add a crypto library interface for ChaCha20” added a library interface to the s390-specific ChaCha20...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: s390/mm: Do not map lowcore with identity mapping. Since identity mapping is fixed at address zero, lowcore is always mapped to address zero as well. This occurs regardless of the relocatelowcore command-line option. If the optio...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: s390/uv: Do not call foliowaitwriteback without a folio reference. foliowaitwriteback requires that no spinlocks are held and that a folio reference is held, as documented. After we removed the PTL, the folio object could be free...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: KVM: s390/diag: fixed the issue ofracy access to the physical CPU number in the diag 9c handler. We currently check if the target CPU equals -1, but this may change at a later time when we will use this functionality. We store th...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: s390/entry: Scrub r12 register on kernel entry Before the commit of f33f2d4c7c80 “s390/bp: remove TIFISOLATEBP”, all entry handlers loaded r12 with the current task pointer lg %r12, LCCURRENT for use by the BPENTER/BPEXIT macros...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: s390/sclp: Fixed the check for NULL values in the SCCB field. The 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 the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: KVM: s390 – Fixed an issue with validity checks when gisa is disabled. This issue occurs when gisa is disabled either by using the kernel parameter “kvm.usegisa=0” or by setting the related sysfs attribute to N e.g., echo N...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: bpf, s390: Fixed a potential memory leak related to jitdata. Make sure that jitdata is freed through kfree in the error path...

OPENSUSE-SU-2026:20912-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2023-20585: iommu/amd: Use maximum Event log buffer size when SNP is enabled on Family 0x19 bsc1243603. - CVE-2026-3150: bcache: fix cacheddev.sbbio use-after-free and...